Occurrence Cause and Preventive Measures of Vegetable Fertilizer Harm

Fertilizer vegetable problems in recent years friends and friends, often encountered problems. That causes vegetable fat have what are the reasons? How to prevent it? Here to tell you about the precautionary measures of vegetable fat damage.

Vegetable fat

1. High concentrations of salt Hazardous greenhouse vegetable fertilization amount of soluble salt in the soil rose to the surface with groundwater, resulting in accumulation of nutrients in the topsoil, due to the high nutrient content of the soil surface, the growth of the plant roots blocked, green and black leaves have a hardening heart Leaf curly, dry tip of young leaves and calyx sites, plant dwarf; seriously injured plants even wilted, withered.

2. Ammonium Hazard Protected areas to use ammonium nitrogen fertilizer or fresh organic fertilizer, when poor ventilation, encountered shed high temperature, it will decompose in a short time to produce large amounts of ammonia, will be volatile to the air, so that leafy vegetables Of the obvious water stains stems and leaves plaques; serious necrosis of the top of the conduction tissue, chlorophyll disintegration, obviously between the leaves and dots, massive dark spots.

Excess nitrogen fertilizer excess nitrogen fertilizer easily lead to large green leaves of fruits and vegetables, petiole and internodes longer, the plant is easy to grow long, sometimes between the veins appear yellow, buds slender, fruit growth is slow, easy to fall, fall fruit.

4. Inappropriate fertilization method sandy soil once the application is too large, short supply of nutrients and fierce, late often due to nutrient deficiency caused by premature plant failure. Volatile ammonium sulfate, ammonium carbonate, urea and other facilities on the surface, reach the desired effect and easy to burn the lower leaves.

Occurrence Cause and Preventive Measures of Vegetable Fertilizer Harm

Vegetable fertilizer prevention measures:

1. Balance fertilization of nitrogen, phosphorus and potassium fertilizer should be combined with the application, as far as possible to avoid the application of a single fertilizer, according to the growth of vegetables in different periods of nutrition requirements, so nitrogen, phosphorus and potassium balance fertilization. Leafy vegetables, a higher proportion of nitrogen, soya-bean vegetables is a higher proportion of potash. Combined use of nitrogen, phosphorus and potassium not only can prevent fertilizer damage, but also improve fertilizer utilization.

2. Application of decomposed organic fertilizer on the vegetable field organic fertilizer, in the decomposition process, the formation of organic colloids, organic colloids on the cation has a strong adsorption capacity, when fertilizers applied to the soil, because the cations are mostly colloidal adsorption, so Soil solution concentration will not rise too high, can improve the buffer capacity of soil nutrients, greatly reducing the possibility of fertilizer damage.

3. Scientific methods of fertilization According to the needs of crop growth, soil nutrient status, weather conditions considering the fertilization period, dosage. To promote full-depth application of the method of stratification, should not spread in the soil surface, in order to achieve integration of soil and fertilizer, fertilizer evenly distributed throughout the tillage layer. Apply facilities to crop roots 10 cm above. At the same time pay attention to fertilization should be properly watering, keep the soil moist, reduce the concentration of the solution, to avoid concentration damage.

4. Controlling the amount of fertilizer in the application of fertilizer must grasp the level of abundance and abundance of sudden nutrition and crop demand for nutrients, the scientific and rational fertilization, not to increase the amount.

These are the reasons for the occurrence of vegetable fat damage and introduction of precautionary measures, friends and friends in the vegetable fertilizers to vegetables, we must pay attention to these issues, not blind.