First, on the basis of increasing the application of organic fertilizers, the ratio of nitrogen, phosphorus, potassium and trace elements of inorganic fertilizers should be reasonably matched. For example, organic fertilizer and inorganic fertilizer are suitable for 7:5 or 6:5; nitrogen, phosphorus and potassium are suitable for 1:0.5-0.6:0.25-0.3; micro-fertilizer varies with different crops, such as: cotton and rapeseed application Boron fertilizer, zinc fertilizer applied to wheat and corn, molybdenum fertilizer applied to legume crops, micro-fertilizers such as boron, zinc, copper and iron in melon and orchard have the functions of improving stress resistance, increasing yield and improving quality.
Second, determine the optimal amount of fertilizer. Through the soil test, based on the principle of what is missing in the soil and how much is needed, the basic balance between crop fertilizer and soil fertilization is achieved.
Third, we must master the best time for fertilization. Generally, the principle of light, medium and heavy after the implementation is implemented, so that the crops are not too fat in the early stage, not long in the middle stage, and not de-fertilized in the later stage.
Fourth, we must effectively improve the fertilization method. Organic fertilizers are used as base fertilizers, and nitrogen fertilizers in inorganic fertilizers should be applied in depth. The depth of fertilization should be 12-15 cm. Phosphorus, potassium and micro-fertilizers should be used for full-layer fertilization in the past, that is, 2/3 of the fertilizer dosage should be turned over. Sprinkle on the ground, plough up and then spread 1/3 of the fertilizer on the hoe, and then fully spread the fertilizer to evenly distribute the fertilizer in the plough layer to achieve the goal of improving fertilizer utilization.
Second, determine the optimal amount of fertilizer. Through the soil test, based on the principle of what is missing in the soil and how much is needed, the basic balance between crop fertilizer and soil fertilization is achieved.
Third, we must master the best time for fertilization. Generally, the principle of light, medium and heavy after the implementation is implemented, so that the crops are not too fat in the early stage, not long in the middle stage, and not de-fertilized in the later stage.
Fourth, we must effectively improve the fertilization method. Organic fertilizers are used as base fertilizers, and nitrogen fertilizers in inorganic fertilizers should be applied in depth. The depth of fertilization should be 12-15 cm. Phosphorus, potassium and micro-fertilizers should be used for full-layer fertilization in the past, that is, 2/3 of the fertilizer dosage should be turned over. Sprinkle on the ground, plough up and then spread 1/3 of the fertilizer on the hoe, and then fully spread the fertilizer to evenly distribute the fertilizer in the plough layer to achieve the goal of improving fertilizer utilization.
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