How to choose NPK compound fertilizer
Send Time:2023-2-12
Formulated fertilizer refers to the fertilizer suitable for specific areas and specific crops, which is made by mixing or granulating process based on soil tests and field experiments and based on the law of crop fertilizer demand, soil fertilizer supply performance and fertilizer effect, with various simple chemical fertilizers and/or compound fertilizers as raw materials.
Rational application
On the basis of crop nutrient demand and supply balance. Adhere to the combination of organic fertilizer and inorganic fertilizer; Adhere to the combination of a large number of elements with medium elements and trace elements; Adhere to the combination of base fertilizer and topdressing; Insist that fertilization be combined with other measures. After determining the amount of fertilizer and the formula of fertilizer, the key point of rational fertilization is to choose the type of fertilizer, determine the period of fertilization and the method of fertilization.
Type of formula fertilizer
According to soil properties, fertilizer characteristics, crop nutrition characteristics, fertilizer resources and other comprehensive factors to determine the type of fertilizer. You can choose simple or compound fertilizer to prepare the formula fertilizer yourself, or you can buy the formula fertilizer directly.
Fertilization period
Apply fertilizer in time according to fertilizer properties and plant nutrition characteristics. Fertilization should be emphasized in the critical period when crops grow vigorously and absorb nutrients, and phased fertilization should be applied in areas with irrigation conditions. Determination of the recommended amount of nitrogen fertilizer for crops at different periods. Where conditions permit, real-time monitoring measures should be established and adopted.
Fertilization method
Base fertilizer, topdressing, seed fertilizer and other methods are commonly used for crop fertilization. Base application mainly adopts ploughing after spreading, strip application, hole application and other methods. Topdressing is commonly used after spraying watering, strip application, hole application, flushing, spraying and other methods.
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