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Formulated fertilization is a combination of modern agricultural science and technology achievements. According to crop fertilizer requirements, soil fertility performance and fertilizer effect, reasonable ratio, dosage and corresponding amount of organic fertilizer, NPK fertilizer and various micro-fertilizers are proposed before crop sowing. Fertilization technology.
Formula fertilization contains two meanings of “recipe†and “fertilizationâ€. The core of the “formulation†is to make accurate measurements of fertilization, so that various nutrients form a scientific formula. "Fertilization" refers to the application of the type of fertilizer determined before sowing, for example, whether it is a base fertilizer or a top dressing, a ditch application or a hole application. The following problems should be noted when applying formula fertilization techniques:
(1) The basis of formula fertilization is the scientific judgment of soil fertility, and the basis of the judgment is the laboratory analysis of the soil and the crop test on the soil. There are many types of soils in China, and the soil fertility levels are quite different. Different soils have different nutrient supply capacities. In actual production, the soil nutrient supply capacity should be determined according to the nature of the soil and the nutrient content of the soil.
(2) Different crop types and even different varieties of the same crop have different fertilizer requirements. In the production, the amount of fertilizer and the method of fertilization should be scientifically determined according to the nutritional characteristics of the crop and the nutrient demand.
(3) At present, the main application in China is the nutrient balance method for fertilization. This method is easy to grasp, but it must have five valid data when it is applied, that is, the crop plan output, the yield of the unit economic yield crop, and the soil fertilizer supply. , fertilizer utilization rate and effective nutrient content of fertilizer. The most critical data is the amount of soil fertility, which requires soil analysis to be accurately determined.
Formula fertilization contains two meanings of “recipe†and “fertilizationâ€. The core of the “formulation†is to make accurate measurements of fertilization, so that various nutrients form a scientific formula. "Fertilization" refers to the application of the type of fertilizer determined before sowing, for example, whether it is a base fertilizer or a top dressing, a ditch application or a hole application. The following problems should be noted when applying formula fertilization techniques:
(1) The basis of formula fertilization is the scientific judgment of soil fertility, and the basis of the judgment is the laboratory analysis of the soil and the crop test on the soil. There are many types of soils in China, and the soil fertility levels are quite different. Different soils have different nutrient supply capacities. In actual production, the soil nutrient supply capacity should be determined according to the nature of the soil and the nutrient content of the soil.
(2) Different crop types and even different varieties of the same crop have different fertilizer requirements. In the production, the amount of fertilizer and the method of fertilization should be scientifically determined according to the nutritional characteristics of the crop and the nutrient demand.
(3) At present, the main application in China is the nutrient balance method for fertilization. This method is easy to grasp, but it must have five valid data when it is applied, that is, the crop plan output, the yield of the unit economic yield crop, and the soil fertilizer supply. , fertilizer utilization rate and effective nutrient content of fertilizer. The most critical data is the amount of soil fertility, which requires soil analysis to be accurately determined.
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