Why should farmyard manure be fully decomposed before it can be used? What are the precautions when using?

Farmhouse manure refers to many kinds of human manure, animal manure, wet compost, compost and so on. In the past, there were many users of farm manure, but in recent years, with the increase of chemical fertilizers, the use of farm manure has become less and less.

Excessive use of single chemical fertilizer will make the surface of the land shallower, reduce nutrition, make the land barren, and increase the situation of crop growth frustration. One way to improve this situation is to increase the amount of organic fertilizer, which shows that the role of organic fertilizer is very necessary for crop growth. Fertilizer in farmland soil will release a lot of heat after fermentation, and it is easy to cause crops to burn roots and seedlings without full fermentation and mature application. After the decomposed manure is applied to the soil, it must be fermented before it can be absorbed and utilized by crops. On the one hand, it is easy to burn seedlings at high temperature during fermentation. Under the action of ammonia, some seeds cannot germinate.

At the same time, farmyard manure also contains a lot of parasite eggs and bacteria, which will not only pollute the soil, but also affect the growth of crops. Compared with chemical fertilizers, commonly used compound fertilizers only contain nitrogen, phosphorus and potassium, while organic fertilizers contain some trace elements, such as magnesium, sulfur, iron and calcium, which are comprehensive in nutrition and beneficial to crop growth. After farmyard manure is applied to the soil, the organic matter contained in it can form a humus through the action of microorganisms in the soil, and the action of humus can promote the formation of soil aggregate structure. In addition, the activity of microorganisms in soil will increase, and the permeability of soil will also increase. In this case, the soil fertility will be cultivated, and the quality and yield of crops will be guaranteed.

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