Buy Compound Fertilizer Notes

Compound fertilizer contains various nutrients, which is more effective than simple fertilizer application. Moreover, the high concentration, low dosage and convenient handling are very popular among farmers. However, most farmers do not know that even if they purchase qualified compound fertilizers, they may cause crops to be cut because of improper selection or improper application. Therefore, in the crucial period of spring cultivation and fertilizer, farmers should pay attention to the following points when purchasing compound fertilizer:

One is to purchase suitable compound fertilizer according to the local soil characteristics. For alkaline calcareous soils in the north, acidic or neutral compound fertilizers should generally be purchased; alkaline or neutral compound fertilizers should be used for acidic soils in the south; organic fertilizers can be added to soils with low organic matter content. Compound fertilizer or organic-inorganic compound fertilizer.

The second is based on the kinds of crops to buy compound fertilizer. For field crops, nitrogen, phosphorus, and potassium ternary compound fertilizers should generally be used. For economic crops such as vegetables and fruit trees, especially root crops, which require more potassium, a compound fertilizer with higher potassium content should be used; The chlorine-tolerant crops such as grapes, potatoes, tobacco, sugar beet, etc. should not be applied to compound fertilizers with high chloride ion content produced by using potassium chloride and ammonium chloride as raw materials. The use of potassium sulfate compound fertilizer is more appropriate.

The third is based on the nature of fertilizers to buy compound fertilizer. The national standard GB15063-2001 stipulates that the effective nutrient content of compound fertilizer (compound fertilizer) can be divided into three types: high concentration, low concentration, high concentration of NPK, ≥40%, moderate concentration of NPK, ≥30%, and low concentration of NPK. ≥25%, excluding trace elements and intermediate elements; water soluble phosphorus content ≥40%. With different nutrient content, there are differences in the quantity and technical requirements for application.

The fourth is based on fertilization method to buy compound fertilizer. In order to increase the fertilizer efficiency of compound fertilizers, different formulations of compound fertilizers should be used for different fertilization methods. When doing basal fertilizer, it is necessary to purchase granular compound fertilizers, or to purchase compound fertilizers containing slow-released controlled-release fertilizers. The long-term effect of fertilizers is beneficial to increase the utilization rate of nitrogen. When doing top dressing, choose a quick-acting fertilizer with high water solubility. Humic acid compound fertilizer is more effective than topdressing.

Fifth, based on the principle of balanced fertilization to buy compound fertilizer. In recent years, most of the counties and regions in China have carried out soil testing and formula fertilization. When farmers' friends buy fertilizers, they should contact the soil and fertilizer stations to learn more about the characteristics of the soil and the law of fertilizer requirements for crops. Based on the principle of balanced fertilization, a reasonable formulation based on soil testing results, What is lacking in supplements and lack of supplements to achieve a balanced supply of crop nutrients?

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