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Blind fertilization may have three consequences: First, the amount of fertilization exceeds the amount needed for the crop, and the input is wasted, resulting in the loss of fertilizer and labor. The second is that the fertilizer used by the plant has not been fully applied, but it has not been applied yet. It has caused waste and produced fertilizer damage.
The crop topdressing season is approaching in autumn. Most of the farmers are affected by traditional habits, especially corn topdressing and single application of urea. The result is not only small spikes but also bald spikes. It is mainly due to the lack of phosphorus and potassium, because the phosphorus and potassium in the base fertilizer are basically absorbed by wheat during the planting of wheat, so the phenomenon of defertilization occurs at the late stage of corn growth. If high nitrogen compound fertilizer is used as top dressing, it can achieve high yield. Last year, some of the farmers using compound fertilizers had a good harvest. This year, the two villages of the Jujube Forest and the Liusha Village in Wangzhuang Township, Henan Province, have tasted the sweetness.
Blind fertilization hazards
According to scientific determination, whether or not the autumn crop yields high or low needs to balance various nutrient elements within the appropriate range. The plant contains more than 60 elements, but mainly nitrogen, phosphorus and potassium. According to the “return theoryâ€, there are three laws for the absorption of fertilizers by plants, that is, equally important laws. Whatever nutrient elements are lacking in crops will affect growth and even cause death; irreplaceable laws, various nutrients needed by crops are in their bodies. They all have certain functions and cannot be replaced with each other; there is also the minimum nutrient law, and all kinds and quantities of elements needed by plants must be proportionate. If one of them does not reach the required amount, growth will be affected and the output will be constrained by the least nutrient content.