How to fertilize plum trees properly? How to control the fertilizer amount of plum

Plum taste acid, can promote gastric acid and gastric digestive enzyme secretion, and can promote gastrointestinal peristalsis, thus has the effect of improving appetite, promoting digestion.So how to fertilize plum trees properly?How should the fertilizer rate of plum hold?

(1) fertilization time

It is the theoretical basis of rational fertilization to apply sufficient fertilizer before the peak of root growth to meet the nutrient requirements including flower bud differentiation and development.The differentiation time of plum blossom buds started from mid-june to early July and continued from mid-september to mid-october and late October, lasting 70 ~ 110 days.

In the meantime, adequate nutrition must be ensured.There were three growth peaks of plum root system, which were from late April to early may, from late June to early July, and from late August to mid September.The first growth peak was accompanied by the growth peak of the new shoot, and the second growth peak was conducted simultaneously with the growth of the new shoot, fruit development and flower bud differentiation, both of which consumed a lot of nutrients, which we called the nutrition consumption period of the year (from late April to July).

In addition, there are two key periods for plum tree growth, namely, organic nutrient accumulation period (July to October) and storage nutrient consumption period (mid-february to late April), in which the nutrients consumed in storage nutrient consumption period mainly come from autumn basal fertilizer and nutrient reflux of leaves after harvest.Therefore, plum trees should be postharded with compound fertilizer and chemical fertilizer before and after germination, sprayed with phosphorus and potassium fertilizer on the leaves in mid-june, and applied with organic fertilizer and chemical fertilizer from late August to early September in early autumn.

(2) fertilizer application amount

Adequate and balanced nutrition supply is the premise for plum trees to produce high yield.In addition, an appropriate amount of trace elements should be added when a large number of elements are applied.The amount of fertilizer can be determined according to the age of different trees. Generally, young trees should be applied with organic fertilizer of 50 to 80 kg, and ternary compound fertilizer of 50 to 1 kg.At the beginning, 100 jins of organic fertilizer were applied to the trees, and 1 to 3 jins of ternary compound fertilizer were applied.In the full fruit stage, the tree plants were applied with 100 to 200 jin of organic fertilizer, 2 to 3 jin of urea, 4 to 6 jin of phosphate fertilizer, and 2 to 3 jin of potash fertilizer.In addition, the amount of fertilizer can be determined according to the yield. If the yield per mu is 1200 to 2000 jin, organic fertilizer 4000 to 5000 jin, urea 50 to 80 jin, potash fertilizer 40 to 60 jin, and phosphate fertilizer 100 to 120 jin should be applied.If a single tree fruit 100 pounds, each tree need to apply 200 pounds of organic fertilizer, ammonium sulfate 4 to 9 pounds, calcium superphosphate and potassium sulfate half catty to 1 catty.

(3) fertilization method

Soil fertilization:

(1) radial ditch application.Mainly used for dressing fertilizer.

(2) rotate-shaped furrow application.Suitable for young trees and mountain orchard.

(3) criss-cross irrigation.Suitable for flat orchard.

(4) fertilizer and water storage at acupoints.Suitable for tablet fertilizer or sand.Generally, the depth of fertilization is between 20 and 40, and the part outside the middle of canopy projection is appropriate.

Foliar fertilizer spraying:

In general, foliar fertilizer spraying can be absorbed and utilized within 15 ~ 120 minutes after spraying, so it can play a good role in the critical period of growth and development of fruit trees (such as flower bud differentiation or the lack of certain elements).

However, attention should be paid when applying fertilizer:

(1) if it is sunny, it should be sprayed before 10 am or after 4 PM.

(2) since the leaf back absorbs fertilizer faster than the leaf surface, the leaf back should be sprayed.

(3) the concentration should be appropriate, and the commonly used concentration is generally about 0.3%.

How to fertilize plum trees properly?How should the fertilizer rate of plum hold?Just to be here to introduce, plum fertilization help with the quality of the plum, plum right fertilization methods in different growth period, supplement nutrition needed, before plum blossom can increasing rapidly available nitrogen fertilizer application and a small amount of phosphate, potash, for timely added plum nutrition needed for different growth period, effectively promote the increase of plum and production.