Winter shed vegetable fertilization preparation

It is necessary to increase the application of organic fertilizers and organic fertilizers not only to improve the soil, but also to provide nutrients. Moreover, in the process of decomposition and utilization, carbon dioxide can be produced and accumulated in the greenhouse, which can increase the application of “gas fertilizer” for vegetables, which is conducive to improving vegetable photosynthesis. The role of promoting vegetable production.

Organic fertilizer should be applied after decomposing because of fresh pig pen manure, human excrement, green manure and crop straw, etc., after the application, a large amount of organic acids, ammonia, hydrogen sulfide, nitrogen oxides, etc. will be produced in the process of decay, not only Ammonia, nitrogen oxides, etc., which endanger the roots of vegetables and escape from the soil, accumulate in greenhouses and cause poison to vegetables.

The potassium chloride, potassium sulfate, ammonium chloride, ammonium sulfate, etc., which are commonly used for soil fertilization, are applied to the soil, and the sulfate ions and chloride ions are absorbed and utilized little, and when applied in general vegetable fields and fields, With the loss of water, reduce the harm. However, in the greenhouse, it is often accumulated in the soil, which increases the acidification of the acidic soil. Therefore, the acidic soil is not suitable for application and can be applied to alkaline soil. Calcium, magnesium and phosphate fertilizers, lime nitrogen and the like are alkaline fertilizers, and should not be used in alkaline soils. Applied topically, it can be applied to acidic soils.