The application of organic fertilizers increases and maintains the soil organic fertilizer content by applying manure, manure, manure, compost, manure, green manure and other organic fertilizers with high organic matter content. Where conditions permit, a large amount of fertilization (river mud, peat, etc.) can be applied. It has a significant effect on improving soil organic matter content.
Returning straw to field and returning straw is an effective measure to improve soil and increase soil productivity. One is that the straw is applied to the soil after being piled up, and the other is that after the crop is harvested, the straw is chopped and scattered on the surface, and then plowed and pressed directly to the field, which can improve the physical properties of the soil and promote the soil aggregate structure. Forming, increasing the ability of ventilation, water permeability and fertilizer retention, thereby improving soil fertility.
Reasonable implementation of inverted rotation according to the characteristics of different crops, arrange appropriate rotation sequence, and appropriately increase the planting area of ​​legumes, and minimize the area of ​​heavy crops and weddings. In the process of rotation, planting a leguminous crop for three years can increase the nitrogen content in the soil. At the same time, after the legume green manure crop is turned into soil, a large number of roots, stems and leaves can increase soil organic matter, improve soil properties and improve soil. Fertility. Like corn ( 2322 ,  0.00 ,  0.00% ) The requirements for the former crops are not strict, but the legumes are the best. Corn is resistant to short-term continuous cropping, but in order to achieve higher yields, it is necessary to increase the amount of input fertilizer. There are few weeds in corn fields, which is a good front for many crops.
Beans and melon crops are not heavy and not smashed. It takes more than five years to rotate, which is conducive to restoring soil fertility, that is, controlling diseases and increasing economic output.
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