Due to differences in soil texture, soil temperature, etc., in addition to the “soil test formula†based on the nutrient content of the cultivated land, in the preparation of fertilizers, “fertilize according to the soil†should be adopted, and other corresponding fertilization measures should be adopted to give full play to the fertilizer****** benefit.
Fertilize according to soil texture
Clay soil is rich in organic matter. This kind of arable land has better water and fertilizer retention performance, but the soil permeability is poor, and the effect after fertilization is slow. Therefore, the application of organic fertilizer must be fully decomposed, topdressing should be properly advanced, and it is recommended to reduce the frequency of fertilization, concentrate more applications during the critical period of fertilizer need, and avoid excessive application of nitrogen fertilizer to prevent crops from becoming "green".
Sandy soil is loose and easy to lose water and fertilizer. This kind of soil must pay more attention to the application of organic fertilizer. Because of the ********* after fertilization, "eat less and more meals" should be promoted when top dressing, and the frequency of fertilization should be increased appropriately, and the amount of fertilization should not be too much each time to avoid loss and waste.
Loamy soil is between clay soil and sandy soil. Fertilizer can be applied in a timely and appropriate amount according to local climatic conditions and crop growth.
Fertilize depending on the "cold or hot" soil
Clay soil is cold soil, sandy soil is hot soil, and loamy soil is warm soil. There should be choices when applying organic fertilizers to increase its utilization rate. The application of cold organic fertilizers such as cow manure is recommended for sandy soils, and the application of thermal organic fertilizers such as chicken manure for clay soils.
In addition, because nitrate fertilizers (such as ammonium nitrate, potassium nitrate, etc.) produce an endothermic reaction during the dissolution process, which cools the soil, they should not be used on clay soils.
Optimizing formula fertilization and increasing organic fertilizer
High-efficiency organic fertilizer can maximize the increase of soil organic matter content, enhance soil water storage and fertilizer retention capacity, and improve soil physical and chemical properties and aggregate structure.
Pay attention to the use of micro-fertilizer and biological fertilizer
Micro-fertilizers can balance the nutrients required by crops, and biological fertilizers can secrete physiologically active substances through their own microorganisms, which can fix nitrogen, dissolve phosphorus, potassium, and decompose other micronutrients in the soil, thereby promoting crop growth and increasing crop yields And quality. At the same time, it can also decompose harmful chemicals in the soil and kill harmful bacteria, reducing the amount of chemical fertilizers, pesticide residues and harmful bacteria.
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