There are 16 essential nutrients for crops, except for carbon, hydrogen and oxygen, which are absorbed from water and air, and the rest are mainly supplied by soil and fertilization. The most needed are nitrogen, phosphorus and potassium, followed by calcium, magnesium, sulfur and trace amounts of iron, magnesium, manganese, boron, zinc, molybdenum and chlorine.
1. In the process of crop growth, if there is insufficient supply of one or several essential nutrients, it will affect crop growth and limit production. Only by increasing the amount of nutrients that are lacking, the yield can be increased accordingly. On the other hand, too much nutrients can also limit crop growth and yield. For example, excessive application of potassium fertilizer can lead to magnesium deficiency, and excessive application of phosphate fertilizer can lead to zinc deficiency.
2, for crops, whether it is a large number of elements or trace elements, are equally important, indispensable, the lack of any kind of nutrients will result in reduced production. The various nutrients needed for crops have certain effects in the body of the crops. They cannot be replaced by each other. What is missing, what is applied, such as phosphorus deficiency can not be replaced by nitrogen, potassium deficiency can not be replaced by nitrogen and phosphorus.
3. When the lack of certain nutrients in the soil affects the yield increase, the rational use of fertilizers containing such nutrients can significantly increase crop yield. When the amount of fertilization reaches a certain level, the fertilizer will continue to be added to increase the yield. Will reduce, if excessively invested in this fertilizer, it will lead to reduced production. For example, excessive application of nitrogen fertilizer will result in greed, late maturity, lodging and reduced production.
4, the soil nutrient supply is limited, must rely on straw returning to the field, the application of farmyard manure, fertilizer, etc., to return the nutrients absorbed by the crop to the soil, in order to maintain soil fertility, sustained high yield, stable yield.
5. The number of different crop types required for different nutrient elements is different. For example, potatoes need more potassium fertilizer. Due to climate, topography, farming levels, etc., different nutrients in the soil are different in different regions and even in the plots. Therefore, the application amount and application ratio of nitrogen, phosphorus, potassium and micro-fertilizer must be properly matched according to different soils and different crops. Otherwise, unreasonable fertilization not only wastes fertilizer, increases the cost of chemical fertilizer application, reduces the quality of agricultural products, increases production without increasing income, and causes soil fertility to decline.
6. Balanced fertilization technology is based on the soil nutrient status and the demand of various nutrients for crops, scientifically calculating various reasonable fertilizer ratios, and formulating them into special formula fertilizers, which are scientifically applied under the guidance of technicians. Balanced fertilization can not only improve production, improve the quality of agricultural products, reduce production costs, but also avoid environmental pollution caused by unscientific fertilization and achieve sustainable development of agriculture.
1. In the process of crop growth, if there is insufficient supply of one or several essential nutrients, it will affect crop growth and limit production. Only by increasing the amount of nutrients that are lacking, the yield can be increased accordingly. On the other hand, too much nutrients can also limit crop growth and yield. For example, excessive application of potassium fertilizer can lead to magnesium deficiency, and excessive application of phosphate fertilizer can lead to zinc deficiency.
2, for crops, whether it is a large number of elements or trace elements, are equally important, indispensable, the lack of any kind of nutrients will result in reduced production. The various nutrients needed for crops have certain effects in the body of the crops. They cannot be replaced by each other. What is missing, what is applied, such as phosphorus deficiency can not be replaced by nitrogen, potassium deficiency can not be replaced by nitrogen and phosphorus.
3. When the lack of certain nutrients in the soil affects the yield increase, the rational use of fertilizers containing such nutrients can significantly increase crop yield. When the amount of fertilization reaches a certain level, the fertilizer will continue to be added to increase the yield. Will reduce, if excessively invested in this fertilizer, it will lead to reduced production. For example, excessive application of nitrogen fertilizer will result in greed, late maturity, lodging and reduced production.
4, the soil nutrient supply is limited, must rely on straw returning to the field, the application of farmyard manure, fertilizer, etc., to return the nutrients absorbed by the crop to the soil, in order to maintain soil fertility, sustained high yield, stable yield.
5. The number of different crop types required for different nutrient elements is different. For example, potatoes need more potassium fertilizer. Due to climate, topography, farming levels, etc., different nutrients in the soil are different in different regions and even in the plots. Therefore, the application amount and application ratio of nitrogen, phosphorus, potassium and micro-fertilizer must be properly matched according to different soils and different crops. Otherwise, unreasonable fertilization not only wastes fertilizer, increases the cost of chemical fertilizer application, reduces the quality of agricultural products, increases production without increasing income, and causes soil fertility to decline.
6. Balanced fertilization technology is based on the soil nutrient status and the demand of various nutrients for crops, scientifically calculating various reasonable fertilizer ratios, and formulating them into special formula fertilizers, which are scientifically applied under the guidance of technicians. Balanced fertilization can not only improve production, improve the quality of agricultural products, reduce production costs, but also avoid environmental pollution caused by unscientific fertilization and achieve sustainable development of agriculture.
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