Three basic principles of soil testing and formula fertilization

The three basic principles of soil testing and formula fertilization 1. Organic-inorganic combination of soil testing and formula fertilization must be based on organic fertilizer. The application of organic fertilizers can increase the content of organic matter in soil, increase the ability of soil to retain water and fertility, increase the activity of soil microorganisms, and increase the utilization rate of chemical fertilizers. Must adhere to a variety of forms of organic fertilizer input, in order to be able to fertilize fertility and achieve sustainable agricultural development. 2. The combination of nitrogen, phosphorus and potassium with nitrogen, phosphorus and potassium is an important part of soil testing and formula fertilization. With the continuous increase of yield, in the case of high nutrient consumption of soil, it is necessary to emphasize the compatibility of nitrogen, phosphorus, and potassium, and supplement the necessary trace elements in order to obtain high and stable yields. 3, the combination of land-use and land-requisition, and the balance between input and output should make the crop-soil-fertilizer form a benign cycle of matter and energy. We must insist on the combination of use and maintenance, and input-output balance. Soil testing and formula fertilization must follow the principle of nutrient return theory, continuously supplement and improve soil fertility, in order to achieve stable yield and high yield, and achieve sustainable agricultural development.

Excerpted from China Agricultural Press>

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