Mastering the scientific application of compound fertilizer technology must first understand the characteristics of compound fertilizer, and at the same time understand the demand characteristics of external nutrient supply during the whole growth period of crops and the basic characteristics of soil, including the quantity of soil nutrients and the soil water retention and fertilizer retention. Ability, etc. This may make the farmers' friends feel too complicated, but the farmers who have experience in actual production are all considered in this way.
Regarding the characteristics of compound fertilizer, it is necessary to start from secondary processing. For example, the compound fertilizers are composed of different elemental fertilizers including urea, calcium, potassium chloride and the like, which are mixed and added with a small amount of binder to granulate. Its shape is granular, nutrients include nitrogen, phosphorus, potassium, and it is possible to add one or several medium and trace elements. The form of nutrients in the compound fertilizer may be completely water-soluble, or may have a small amount of insoluble or weak acid dissolved. For example, the nitrophosphate fertilizer has weak acid solubility and water solubility. Therefore, the main characteristics of compound fertilizer can be summarized as follows:
1. The shape of the appearance is a particle with a certain compressive strength, which can be gradually dissolved and released to release nutrients after being applied to the soil;
Second, the nutrient composition is complex, containing nitrogen, phosphorus or potassium and may contain trace elements such as calcium, magnesium, sulfur, iron and molybdenum;
3. The nutrient forms in the compound fertilizer granules are diverse, such as nitrogen, which may be in the urea-based state or in the ammonium or nitrate state; the phosphorus may be completely water-soluble or partially water-soluble; Potassium may be thio or chloro. In short, the compound fertilizers that have been processed by secondary fertilizers have their composition and technical content increased, so the cost increases and the price increases accordingly.
Therefore, the correct application of compound fertilizer on crops needs to be considered comprehensively. Only when the compound fertilizer traits are matched with the soil and crop traits, can we achieve a win-win situation of increasing production and increasing income.
Regarding the characteristics of compound fertilizer, it is necessary to start from secondary processing. For example, the compound fertilizers are composed of different elemental fertilizers including urea, calcium, potassium chloride and the like, which are mixed and added with a small amount of binder to granulate. Its shape is granular, nutrients include nitrogen, phosphorus, potassium, and it is possible to add one or several medium and trace elements. The form of nutrients in the compound fertilizer may be completely water-soluble, or may have a small amount of insoluble or weak acid dissolved. For example, the nitrophosphate fertilizer has weak acid solubility and water solubility. Therefore, the main characteristics of compound fertilizer can be summarized as follows:
1. The shape of the appearance is a particle with a certain compressive strength, which can be gradually dissolved and released to release nutrients after being applied to the soil;
Second, the nutrient composition is complex, containing nitrogen, phosphorus or potassium and may contain trace elements such as calcium, magnesium, sulfur, iron and molybdenum;
3. The nutrient forms in the compound fertilizer granules are diverse, such as nitrogen, which may be in the urea-based state or in the ammonium or nitrate state; the phosphorus may be completely water-soluble or partially water-soluble; Potassium may be thio or chloro. In short, the compound fertilizers that have been processed by secondary fertilizers have their composition and technical content increased, so the cost increases and the price increases accordingly.
Therefore, the correct application of compound fertilizer on crops needs to be considered comprehensively. Only when the compound fertilizer traits are matched with the soil and crop traits, can we achieve a win-win situation of increasing production and increasing income.
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