Application of trace elements in soybean production

When sowing, apply 0.5-1kg zinc sulfate per mu or 0.2-0.3% zinc sulfate solution in seedling stage and early flowering stage.

The effective boron content in soil was less than 0.5 mg/l, and the boron effect was significant.0.1% boric acid or borax can be used as external spraying.

Molybdenum fertilizer can be mixed as seed fertilizer or deep root application.1. Seed dressing: put 1 ~ 2 grams of ammonium molybdate per kg of seeds into a porcelain basin and add water to dissolve the seeds. The amount of water can mix the seeds wet without remaining fertilizer.2. Outside root fertilization: apply 0.05% ~ 0.1% ammonium molybdate, 50 kg solution per mu, and spray the fertilizer from seedling stage to before flowering.3. Seed and fertilizer: 10 grams of ammonium molybdate per mu is dissolved in water and mixed with potassium phosphate or farm manure for furrow or hole application.

Application of fertilizer in middle and late stage of melon

Camellia is a kind of flower loved by many friends.The friend that raises potted camellia also has a lot of, what to fertilize skill to have in the breeding process of potted camellia then?Today I would like to introduce the fertilization technology of potted camellia.

Potted camellia

Nitrogen fertilizer quickens spring shoots.Camellia in 18 ℃ began to sprout new tip.Two times a year, the first about in mid-march to mid-late April, known as "spring shoots";The second time around in mid-to-late July to early September, known as "summer shoots."Camellia flower bud more than born in the spring of the new shoot.

Therefore, keeping a good spring shoot is the key to the camellia blossom.When spring shoots begin to germinate, apply nitrogen-based germination fertilizer once every 10 days until spring shoots begin to lignify.After such a number of root and root outside topdressing, camellia spring shoot will grow very lush, leaves can stretch to the maximum limit.

How to fertilize pot camellia

Phosphorus and potassium promote the bud.Camellia is in spring tip draw sufficient, after entering lignification, can have a paragraph of shorter dormant period.The beginning of dormant period is also the beginning of flower bud differentiation stage of camellia.Avoid by all means at this time again apply nitrogen fertilizer, and should change apply phosphor, potash fertilizer, every 10 days or so.At the same time, leaf spraying was carried out with potassium dihydrogen phosphate 1000 times, a small amount of borax and thin liquid mixed with rice vinegar.This can not only control the growth of camellia, but also promote flower bud differentiation and shorten the time of flower bud differentiation, conducive to the formation of buds.

Fertilization techniques for potted camellia

The buds are sparsely protected.Flower bud is rapid after bulking, should undertake in August mid or late period sparse bud, big seedling is general a branch can leave two bud, each branch of small seedling leaves a bud only, make level of size flower bud is clear, distributing even, in order to lengthen the ornamental time of the flower.After thinning, a few more times of thin phosphate fertilizer can be applied in September and October.Water should accomplish "do not do not irrigate, irrigate is irrigated thoroughly", make basin earth maintains all the time in "see dry see wet" condition, fall off of bud in case or coke is withered.

In addition, camellia is fond of acid flowers, in order to transform the acidity of basin soil, in the growth period every 20 days or so should be applied a thin ferrous sulfate water, in order to maintain lush green leaves, promote robust plants, delicate color.

The above is the introduction of pot camellia fertilization technology, cultivation of pot camellia friends can refer to the above fertilization technology, combined with the actual planting situation, reasonable fertilization.

Techniques for fertilizing vegetables in sheds

The temperature in early spring is unstable and changes frequently, which will lead to the difficulty of fertilizing vegetables in the shed. If the method is not scientific, it will have a great impact on the normal growth of vegetables in the shed.That early spring shed vegetable fertilization how to apply fertilizer correctly?Here we introduce the shed vegetable fertilization technology.

How to properly fertilize shed vegetables

1, heavy base fertilizer light top fertilizer

The principle of applying enough basal fertilizer and less topdressing fertilizer should be mastered in the production of vegetables in sheds.The proportion of general base fertilizer should account for about 70% of the total amount of fertilizer applied, among which phosphate fertilizer can be increased to 70% due to slow decomposition.The top dressing of nitrogen and potassium should be 50%.High quality farmyard compost, farmyard manure must be fully mature, the usage amount per mu is about 5000 kg, high quality organic compound fertilizer per mu is generally 75 kg, not more than 100 kg.The rest of top dressing should be controlled flexibly according to the growth of vegetables and the regular period of fertilizer demand.

2. Apply organic fertilizer appropriately

Organic fertilizer nutrition is comprehensive and balanced, not only can improve the soil, improve the ability of fertilizer and water retention, but also can make the fertilizer release steadily, but also can adjust the balance of soil acidity.In addition to the application of farm manure, the application of bio-organic or bacterial manure should also be strongly advocated.This kind of organic compound fertilizer can supply a large number of element fertilizers and a variety of trace elements, supplement the organic matter to improve the soil, inhibit the harm of some diseases and insects in the soil, and avoid the concentrated supply of soil fertilizer.

Techniques for fertilizing vegetables in sheds

3, dressing appropriate ditch deep application

Because of the high degree of tightness of the vegetables in the shed, it is very easy to make the fertilizer volatilize when applying the fertilizer in the shallow layer, which not only reduces the fertilizer effect but also easily produces the harm of ammonia gas.Topdressing, a hole or strip, depth of 5?Six centimeters, two to the vegetable root system to maintain 8?It's 10 centimeters away.

4, according to the temperature of dressing

Nitrogen fertilizer, especially urea and producyion only when converted to nitrate nitrogen is easy to be absorbed by vegetables to the external cause is a absorption temperature conditions, when the relative temperature below 15 ℃, nitrifying bacteria and the activity will be subdued.Therefore, top application of nitrogen fertilizer should be carried out around noon in sunny days.For nitrogen deficient vegetables or leaf vegetables such as spraying 0.5%?Urea solution at 1.0% concentration will work better.

The above is the introduction of the fertilization technology of shed vegetables. The vegetable farmers who plant shed vegetables can use the above fertilization technology in a more scientific way according to the actual situation.

How is the grapefruit tree fertilized?

Grapefruit is a sweet and sour delicious fruit, not only rich in nutrition, but also medicinal value, loved by everyone.When planting pomelo tree, we need to pay attention to the fertilization of pomelo tree is not the same as other plants, can be from small to large one kind of fertilizer or with the same way of fertilization, specific pomelo tree is how to apply fertilizer?

How does pomelo tree young tree apply fertilizer

The root system of seedling without fruit has shallow distribution and weak ability of absorbing fertilizer.Fertilize once a month from march to July and November.Among them, spring shoot fertilizer in March, summer shoot fertilizer in May and winter fertilizer in November are indispensable.

Young trees are mainly organic nitrogen fertilizer, such as human excrement and urine, rotten manure, cake fertilizer, combined with the right amount of urea fertilizer.

How does the pomelo tree fertilize its adult tree

Adult fruit trees were mainly fertilized to achieve high quality, high yield and stable yield, and to regulate the relationship between vegetative growth and reproductive growth.Fertilizer should be applied at least 3 times a year.Germination accelerating fertilizer: 10-15 days before germination in early march, the fertilizer was mainly applied with fast-acting nitrogen fertilizer and appropriate amount of phosphate and potassium fertilizer to promote the extraction of spring shoots with large quantity and good quality.This fertilization relates to the current and next year's yield, must be timely, early and adequate.

Techniques for fertilizing pomelo trees

The amount of fertilizer application accounts for about 30% of the whole year, and the general plants are applied with about 0.50-0.75kg urea and 0.25kg superphosphate.Zhuangguo fertilizer: from June to August, zhuangguo fertilizer was applied during fruit expansion, with nitrogen as the main fertilizer and phosphorus and potassium as the auxiliary fertilizer.Fertilizer amount accounts for about 30% of the year, the specific should be the number of hanging fruit to decide.Hanging fruit much, large amount of fertilizer, can be in June, August two times, the general plant urea, compound fertilizer 0.5kg or 0.75kg urea, calcium superphosphate, potassium chloride 0.25kg each.Hanging fruit less discretion or not strong fruit fertilizer, in case of fierce autumn shoot.

Fruit-picking fertilizer: applied in early November, the application amount accounts for about 40% of the whole year.The growth of pomelo fruit consumes a lot of nutrients, which needs to be supplemented in time to restore the tree potential, improve the ability to withstand cold and overwinter, and promote flower bud differentiation, laying a foundation for the growth and results in the next year.Fruit fertilizer should be combined with quick - acting fertilizer, organic fertilizer, nitrogen fertilizer and phosphate fertilizer.General plant application urea, compound fertilizer 0.5kg each, cake fertilizer 5kg, soil fertilizer such as waste 100kg.In addition, can also be combined with the right amount of spray urea, phosphate dioxy potassium for root topdressing, timely supplement tree for nitrogen, phosphorus, potassium needs.

What problem does cucumber topdressing need to notice?

Cucumber is a daily edible summer vegetables, for the planting of cucumber friends, fertilization is a key link, the cucumber topdressing need to pay attention to what problems?The following to introduce the cucumber fertilizer technology.

cucumber

Transplanting to sitting before melon should see seedling topdressing, and control the amount, it is appropriate to use "thin fertilizer frequently, a small amount of food" topdressing method, if the topdressing is too much and too concentrated, easy to cause plant growth, affect reproductive growth, and even cause flower, melon.Can apply slightly commonly dilute fecal water or fluid of biochemical organic fertilizer can.

Cucumber is a kind of vegetable with a shallow root system and a large amount of fertilizer. In the production process, in addition to applying sufficient organic fertilizer, a large amount of chemical fertilizer should also be applied, and the top dressing should be increased from the young fruit stage to the harvest stage to promote the growth and development of the fruit and the demand for nutrients in the growing stage.In the growing period of root melon, quick effect fertilizer 2?For 3 times, 30% human excrement and urine leaching liquid can be selected to ensure that the plant does not lose fertilizer.In order to meet the needs of plant growth in the middle and late stage of growth, it is necessary to avoid defattening in the late stage, which may cause premature aging of the plant or the appearance of malformed melon.Human manure or potassium sulfate compound fertilizer was applied once every 10 days.

Cucumber fertilizer

Cucumber not only absorbs nutrients from the soil by the roots, but also can absorb mineral nutrients from the leaf surface to promote the development of fruit expansion.4 times foliar fertilizer, available biochemical organic liquid fertilizer 300?500 times liquid, also can choose chelate state multivariate compound microfertilizer 500 times liquid, or supplement boron, zinc, iron and other microfertilizers, in order to improve the quality of cucumber, enhance the resistance of plants, prevent premature aging.

Top dressing of cucumber should not be applied in wet soil, which is likely to cause differentiation of female flowers and malformation of melon, resulting in physiological diseases such as deciduous leaves, falling flowers and mellifluous melon. Applying fertilizer at high temperature will lead to high water evaporation of plant leaves, which will affect the effect of fertilizer.In addition, fertilization time in the morning or evening is appropriate.

Above is the introduction of some cucumber fertilizer technology, planting cucumber friends, can refer to the above fertilizer technology, combined with the actual planting conditions, reasonable fertilizer.

Bean dressing technology

The right amount of nitrogen fertilizer should be applied at the early stage of growth.The nitrogen fixation ability of rhizobium in root of kidney bean was weak at seedling stage.But if the plant grows exuberant, must control or do not use nitrogen fertilizer, in case plant nutrition grows too flourishing to be known as mad grow, and cause delay florescence, fall flower fall fruit or delay result.

The first topdressing should be mastered in the bud stage of the first inflorescence. Apply 10 kg of urea or an appropriate amount of manure.When the pod grows to 3-4 cm long, namely after the flowering and fruiting stage, continuous fertilizer application is started. According to different stubble and plant growth, fertilizer application is generally applied every 10-20 days.

Muck fertilizer and compound fertilizer should be used alternately, muck fertilizer is right amount, compound fertilizer 10-20 kilograms/mu.

It is better to follow the water to apply fertilizer, which is beneficial to dissolve.Water should be poured between the two topdressing to promote photosynthesis and meet the needs of rapid pod growth.In addition to the root fertilization, leaf surface fertilizer can also be used for leaf spraying, the effect is more obvious

Method to improve the fertilizer utilization rate of balsam pear

One, dig a annular ditch in 20 cm inside balsam pear plant, ditch depth 5 cm, then each ditch into compound fertilizer 50 grams or 80 grams of biological fertilizer, with soil after the ditch watering.Can also be in balsam pear plant inside 20 cm to dig a half meter long strip ditch, each ditch into the amount of fertilizer, the effect is also good.Need to pay attention to is, balsam pear after each topdressing, must be timely watering, so that absorption effect is good.

Two, balsam pear with water irrigation fertilizer, so that the number of balsam pear mu planting plants is small, only 200-300 plants per mu, only 3-6 plants per row, if the water with irrigation method topdressing fertilizer, fertilizer utilization rate will be very low, serious waste.Therefore, small make up in this remind vegetable friends, balsam pear topdressing fertilizer should be changed to centralized fertilization, such as digging ring ditch application, so can greatly improve the utilization rate of fertilizer.

High yield fertilization technology for spinach

One, sufficient base fertilizer is the premise of spinach

Each mu of autumn spinach organic fertilizer 4000-5000 kg, 25-30 kg superphosphate, deep 20-25 cm, do high check or flat check.Overwintering spinach choose high soil deep, fertile soil, humus content, soil protecting fertilizer water good performance, also should be more than other seasons organic fertilizer, can be broadcasting rotten organic fertilizer 5000 kilograms per mu, calcium superphosphate, 25 to 30 kg commune 20-25 cm, make the soil thoroughly incorporated, loose soil, unearthed promote seedling and root growth, basal, seedling growth, is the key of vegetable safety overwintering.

Spring spinach sowing early, can be fertilized in the previous year, each mu application of organic fertilizer 4000-5000 kg, 20-25 cm deep, rake flat do check, when the early spring soil thawing 7-10 cm deep can be sown.It is better to choose neutral clay soil, compost and fertilizer mixture can be used as base fertilizer.Apply 3000-4000 kg of compost per mu, 30-35 kg of calcium superphosphate, 20-25 kg of ammonium sulfate, 10-15 kg of potassium sulfate.

Two, timely topdressing spinach is the key

Autumn spinach seedlings unearthed, grow to 4-5 true leaves, should be applied in stages 2-3 times rapid nitrogen fertilizer.Each mu of water topdressing ammonium sulfate 20-25 kg, or urea 10-12 kg, promote leaf thickening growth, increase yield, improve quality.Another bear in mind: in the top fertilizer to spinach when thousands of do not put fertilizer in the heart of the leaves, so as not to cause burning seedlings, each top fertilizer should be combined with water, so that fertilizer can play a role as soon as possible, spinach to achieve high yield and high efficiency.

The frostbitten pomelo tree should be heavily fattened before flowering

Frozen grapefruit must be in the minor cold?During the big cold period, the pre-flowering fertilizers were mainly organic fertilizers with high quality and complete nitrogen-phosphor and potassium fertilizers, with increased application of phosphor and potassium fertilizers and biological bacterial fertilizers.The results of more than five years of the tree, each of the human and livestock manure 15~20 kg, nitrogen, phosphorus and potassium (15:15:15) potassium sulfate compound fertilizer 0.75~1 kg, calcium superphosphate or calcium magnesium phosphate fertilizer 1~1.5 kg, potassium sulfate 0.25~0.5 kg, compound biological fertilizer 0.5~0.75 kg.

All the fertilizer fully mixing evenly mixed, and around the canopy drip line, dig deep, each 25 ~ 30 cm wide ring groove, the mixer mixing fertilizer broadcasting within the annular groove, cover soil, covering all the fertilizers, then each tree Lin shi 40 ~ 50 kg water or biogas slurry or retting rotten people and livestock manure, to water infiltration into the soil completely not to drain is advisable.

In addition, but also timely root topdressing.Spray 0.1% borax, 0.1% magnesium sulfate, 0.1% zinc sulfate, 0.2% urea, 0.3% potassium dihydrogen phosphate, 600-fold amino acid complex microfertilizer, 1000-fold trialkanol, and 1500-fold 0.001% natural brassin-mixed solution on the leaf surface every 7 to 10 days for continuous 2-3 times.

How to fertilize lettuce

First, lettuce needs fertilizer

Lettuce can be divided into and leaf lettuce, and lettuce xi a cold environment, neither cold nor hot, suitable growth temperature for 15 ~ 20 ℃, should choose is rich in organic matter, slightly acidic (pH 5 ~ 7) soil cultivation.For every 1000 kg of lettuce, it needs to absorb 2.5 kg of nitrogen, 1.2 kg of phosphorus and 4.5 kg of potassium.Lettuce needs more potassium.Growth period needs nitrogen, phosphor, potash fertilizer to cooperate use.

Iceberg lettuce is a kind of herbaceous plant of composite family lettuce.Because lettuce root system is distributed shallow, absorptive capacity is weak, much oxygen requirement is high, accordingly, the soil that asks to have conserving water, conserving fertilizer, rich in organic matter and sandy loam are advisable.Lettuce has a higher requirement for soil nutrition. Specifically, lettuce needs more nitrogen, potassium and phosphorus.It is thought to absorb 3.7kg of nitrogen, 1.45kg of phosphorus and 3.28kg of potassium per 1,000kg of lettuce.Lettuce grows fast, like nitrogen, absorbing fertilizer consumption is small, early growth in 70 ~ 80 days after seeding into the knot ball period, a sharp increase in nutrient uptake in the ball in a month, and nitrogen uptake can account for more than 80% of the whole growth period, the absorption of phosphorus, potassium and nitrogen, potassium absorption, in particular, not only can absorb large, and lasted until the harvest.Phosphorus deficiency in seedling stage had the greatest effect on growth, and phosphorus deficiency in heading stage affected lettuce heading.Potassium deficiency during nodularity seriously affects leaf weight.

Two, lettuce base fertilizer

Base fertilizer to apply agricultural fertilizer per mu 2500~3000 kg (or commercial organic fertilizer 350~400 kg), urea 4~5 kg, diammonium phosphate 13~17 kg, potassium sulfate 7~8 kg, the lack of calcium in the soil, the lack of calcium soil per mu calcium nitrate 20 kg.

Three, lettuce topdressing

1, the base fertilizer is given priority to, the base fertilizer at the early stage of growth can not be topdressing, lettuce in the transplanting, the whole growth period after three times of fertilizer, the first time in about 15 days after the slow seedling, chasing urea 10 kg/mu, the second time in the early nodulation or rosette stage of rapid growth, chasing urea 10 kg/mu, the second?In the second stage of yield formation, 8 ~ 10 kg/mu of chasing urea can be sprayed with phosphorus and potassium foliar fertilizer.If the top fertilizer is compound fertilizer, it can also be urea and compound fertilizer 1:1 mix, fertilize lettuce for the first time between every two plants, and punch holes in the middle of the membrane for the second time with a tool, 2~3 holes.

2. Lettuce is a hefei vegetable, which needs more nutrients throughout its growth period.The top dressing could be carried out in three times, and the slow seedling transplanting was followed by the quick nitrogen fertilizer once to promote the leaf growth.15 ~ 20 days after transplanting, the second fertilizer was applied, nitrogen, phosphorus and potassium compound fertilizer was better, 15 ~ 20 kg per mu was applied.After 30 days of planting, the heart leaves began to hold the ball, and then 10 ~ 15 kg of compound fertilizer was applied once to ensure the nutrients needed for the growth of the leaves.

Four, lettuce root top dressing

At the early stage of inner curling, 0.2% urea and 0.2% potassium dihydrogen phosphate can be sprayed on the leaf surface for 2~3 times.In the absence of calcium in the soil, 1% calcium nitrate solution could be sprayed on the rosette leaf surface for 3 times continuously and once every 7 days.Carbon dioxide gas fertilizer can be applied in facility cultivation.

Again good fertilizer, also be afraid of these! It's not too late to know!

Compound fertilizer is not the sooner the better.

Compound fertilizers are granulated from nitrogen fertilizer, phosphate fertilizer, potash fertilizer and mineral powder.Nitrogen fertilizer and potash fertilizer are easily soluble in water, while phosphate fertilizer and mineral powder are insoluble or slow to dissolve.

If the phosphorus content of compound fertilizer is high, it will dissolve slowly.Nitrate nitrogen, ammonium chloride or ammonium sulfide content of high, fast dissolution;The quality of mineral powder is good and the dosage is small, also dissolves quickly, but the fertilizer intensity is low, the powder is many.Visible, fertilizer dissolves fast the need that is ingredient of the recipe in production, do not show the actor and actress of the product and true and false.

[how to use fertilizers with different solubility]

1. Compound fertilizer is slow in dissolution and long in effect, so it should be base fertilizer:

A large number of experiments showed that both binary and ternary compound fertilizers had better base application.This is because the compound fertilizer contains nutrients such as nitrogen, phosphorus and potassium, and the crops are especially sensitive to nitrogen, phosphorus and potassium in the early stage, requiring nitrogen, phosphorus and potassium fertilizer to be applied as base fertilizer in the early stage.

Compound fertilizer should not be used in seedling stage and middle and late stage to prevent greediness.Compound fertilizer dissolves slowly. For the crops with compound fertilizer as base fertilizer when sowing, it should be timely supplemented with quick-acting water-soluble fertilizer to meet the nutritional needs of crops according to the fertilizer requirements of different crops.

Compound fertilizers vary greatly in concentration, so attention should be paid to selecting the appropriate concentration: at present, most compound fertilizers are distributed according to the average nutrient status of soil types and the proportion of fertilizer required by crops in a certain region.There are high, medium and low concentration series of compound fertilizers on the market. Generally, the total nutrients in low concentration are between 25% and 30%, the medium concentration is between 30% and 40%, and the high concentration is above 40%.

Economical and efficient compound fertilizer should be used according to different regions, soils and crops.Generally, high concentration compound fertilizer is used for economic crops with excellent quality, less residue and high utilization rate.Compound fertilizer is of high concentration. Avoid direct contact between seeds and fertilizer.The nutrient content of compound fertilizer is high. If it comes into direct contact with seed or seedling root system, it will affect seedling emergence and even burn seedling and rotten root.When sowing, the seed should be mixed with acupuncture point apply, strip apply compound fertilizer apart 5-10 centimeters.

Different proportions of compound fertilizer raw materials, should pay attention to the use of nutrients: different brands, different concentrations of compound fertilizer used by different raw materials, production should be based on the type of soil and crop types to choose the use.

Compound fertilizers containing nitrates should not be used in leafy vegetables and paddy fields.Compound fertilizers containing ammonium ions should not be applied on saline-alkali land.Compound fertilizer containing potassium chloride or chloride ion should not be used on crops or saline-alkali land.Compound fertilizer containing potassium sulfate should not be applied in paddy fields and acid soil.

Otherwise, it will reduce fertility and even poison crops.Compound fertilizer containing two or more than a large number of elements, n table with volatile loss or drained away with the rain, phosphorus and potassium fixed by soil, especially the mobility of phosphorus in the soil is small, not easy to be absorbed by crops root in surface, is unfavorable to deep root system, drought conditions in the fertilizer can't dissolve in exploiting the worse, so compound fertilizer should be deep overburden soil.

2. Water-soluble fertilizer dissolves quickly and has moderate effect. Top dressing is recommended:

Topdressing is the addition of fertilizer to crop growth.The main purpose of topdressing is to supply a large amount of nutrients for a certain period of time or to supplement the deficiency of base fertilizer.The application of topdressing is characterized by its flexibility. It should be symptomatic and topdressing according to the deficiency of elements in different periods of crop growth.Production is usually combined with base fertilizer, seed fertilizer and top fertilizer, generally based on top fertilizer as a supplement.

Usually, top fertilizer is quick and effective water soluble fertilizer with fast solubility, such as water soluble fertilizer for soil conditioning;Water-soluble fertilizer for rooting and promoting flower bud;Products that promote the growth of fruits and roots can regulate the soil, improve the soil consolidation caused by the use of chemical fertilizers, improve the physical and chemical properties of soil, and enhance the ability of soil to retain water, fertilizer and fertilizer.It is the best fertilizer for economic crops to adjust soil, root, color and sweeten.

When the soil moisture is too high, should not use the water soluble fertilizer directly into the soil topdressing method, at this time can use leaf spraying set nutrition.Foliar topdressing can be combined with spray.This method USES less fertilizer, has a quick effect, and can avoid the fertilizer being fixed by the soil.

3. The solubility of selected fertilizers varies with soil texture

Sandy sex soil: the ground is thin yield is low, easy leakage leakage fertilizer, apply dissolve fast fertilizer, but each time dosage is little, frequency wants much, namely "eat much food less".Viscous soil: high yield of soil fertilizer, good water and fertilizer retention, suitable for the dissolution of relatively slow fertilizer, but each dosage can be more, the number of times can be less, that is, "eat more meals."

[what other factors affect the exertion of fertility?]

During the growth cycle of the plant, the root of the plant is absorbing water and nutrients all the time, so after fertilization, the plant can immediately absorb nutrients. Of course, the amount and degree of absorption are greatly related to the environment, and also to the degree of water solubility of the fertilizer.

For example, nitrogen and potassium are easily absorbed, crystalline forms are more easily absorbed into plants than powders, and less easily absorbed phosphorus, calcium and boron ions need to be converted into a form that can be used.

Farmer friend says again: wrong ah, a lot of teachers say phosphate fertilizer is not mobile inside soil.Well, because previous fertilizer varieties were granular based, the range of rapid phosphorus movement was relatively small.But now a lot of fertilizer water solubility is very high, the technology has been innovative.

So, if you use a water soluble fertilizer, on the day of fertilization, the right conditions can enter the plant.Therefore, whether the applied nutrients can be absorbed and utilized by plants depends on soil nutrient concentration, soil moisture content, temperature, fertilizer type, fertilizer solubility and other factors.

Soil nutrient transport was carried out in three forms: interception, mass flow and diffusion.

From the perspective of soil nutrient concentration and soil water content, the number of nutrients contacted by roots was more and the interception was more when the concentration was high.The concentration gradient is large, the nutrient diffuses to the root surface is many;High water content, fast water flow, high concentration, large amount of nutrients in unit volume, and large amount of nutrients carried by the mass flow are some factors that affect the speed of nutrient absorption by plants.

In addition, there are the following factors affecting fertilizer absorption:

1, the excess of a certain nutrient element affects the play of the fertilizer effect: the lack of certain elements in plants will produce physiological obstacles, affecting the normal growth, but if one element is excessive, it will also affect the absorption of other elements, will also make the growth of plants blocked.

2. PH affects the effect of fertilizer: when the PH value ranges from 5.5 to 6.5, the effect of fertilizer is the best, and nutrients such as iron, copper, manganese and zinc are the most effective when the PH value is below 6.

3. Different growth periods affect the effect of fertilizer: nitrogen and phosphorus are the main nutrients in the growth period, and balanced fertilizers of nitrogen and phosphorus and trace elements can be applied;Organic nutrition, phosphorus and potassium micronutrients were dominant in flower bud differentiation and flowering.

4. Different physiological characteristics of plants affect the effect of fertilizer: for example, there are great differences in the fertilizer requirements of roots and tubers, continuous flowering and bearing plants, and stems and leaves.

5. Different media affect the play of fertilizer efficiency: soil cultivation and soilless cultivation, fertilizer formula is different.

6. Different water quality and water temperature affect the performance of fertilizer: acid fertilizer should be applied in hard water area or water quality should be softened; calcium and magnesium fertilizer should be added regularly in soft water area.Winter recommended fertilization had better not water temperature below 18 ℃.

7. Fertilization time affects the performance of fertilizer: the best time for fertilization is around 10 o 'clock in the morning and 4 o 'clock in the afternoon. Avoid fertilization under strong sunlight at noon and on rainy and snowy days.

8. Fertilizer types affect the play of fertilizer efficiency: different crops and different growth periods use different types of fertilizer, compound fertilizer and water-soluble fertilizer together, root application and foliar spraying together, and targeted fertilization can reduce the cost and improve the fertilizer efficiency.

9, the proportion of fertilizer content imbalance affects the performance of fertilizer: scientific fertilization is to make each element before the mutual promotion of absorption, to avoid antagonism.