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According to scientific determination, the high yield of autumn crops needs to balance various nutrients in an appropriate amount. Plants contain more than 60 elements, but mainly nitrogen, phosphorus and potassium. According to the "return theory", there are three laws for the absorption of fertilizers by plants, that is, the same important law. No matter which nutrient is lacking in crops, it will affect growth and even death. It is not a substitute for the law. The various nutrients needed by crops are in its body. They all have certain functions and cannot be replaced by each other; there is also a minimum nutrient law, and all kinds of elements and quantities required by plants must be proportional. If one of them does not reach the required amount, growth will be affected and the yield will be limited by the least amount of nutrients.
Blind fertilization may have three consequences: First, the amount of fertilization exceeds that of the crop, and the waste is wasted, causing loss of fertilizer and labor. The second is that the applied fertilizer has not been applied, and it should not be applied, but it has caused waste and produced fat.
The fall season of crops is approaching, most farmers are affected by traditional habits, especially corn topdressing, single application of urea, the results are not only small and bald. Mainly due to the lack of phosphorus and potassium, because the phosphorus and potassium in the base fertilizer have been basically absorbed by wheat, so the phenomenon of defermentation occurs in the late growth stage of corn. If high-nitrogen compound fertilizer is used as top dressing, the effect of high yield can be achieved.
Blind fertilization may have three consequences: First, the amount of fertilization exceeds that of the crop, and the waste is wasted, causing loss of fertilizer and labor. The second is that the applied fertilizer has not been applied, and it should not be applied, but it has caused waste and produced fat.
The fall season of crops is approaching, most farmers are affected by traditional habits, especially corn topdressing, single application of urea, the results are not only small and bald. Mainly due to the lack of phosphorus and potassium, because the phosphorus and potassium in the base fertilizer have been basically absorbed by wheat, so the phenomenon of defermentation occurs in the late growth stage of corn. If high-nitrogen compound fertilizer is used as top dressing, the effect of high yield can be achieved.
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