Buy the right five compound fertilizer basis

Due to the multiple nutrients needed by plants, complex fertilizers have a significant effect on the yield increase compared to the application of simple fertilizers. This concept of fertilization has been recognized and accepted by farmers. However, due to the constraints of many factors, most farmers do not know that even if they purchase qualified compound fertilizers, they will cause crops to produce less or even lose crops due to improper selection or improper application. Therefore, I would like to talk about how to buy a suitable compound fertilizer, and I would like to talk about a little superficial insights for the farmers' friends only.

One is to purchase suitable compound fertilizer according to the local soil characteristics. For the farmers who are located in the alkaline soils in the north, they should generally purchase acidic compound fertilizers; on the contrary, they should use alkaline compound fertilizers for the farmers in the acidic soils in the south; for soils with low organic content, they can generally With organic fertilizer or organic-inorganic compound fertilizer added.

In addition, for alkaline soils in Northwest China, it is generally not appropriate to select and apply compound fertilizers produced from osmotic soluble phosphorus, potassium chloride, and ammonium chloride as raw materials.

The second is based on the variety 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; Chlorine-free crops such as grapes, potatoes, tobacco, sugar beet, etc. are not suitable for the application of compound fertilizers with high chloride ion content produced from potassium chloride and ammonium chloride as raw materials.

The third is based on the nature of fertilizers to buy compound fertilizer. Farmers and friends should usually learn to understand and master some common knowledge about fertilizers so that they can easily know what they are buying. For example: GB15063-2001 national standard stipulates that the content of effective nutrient in compound fertilizer (compound fertilizer) is divided into three types: high concentration, low concentration, high concentration of NPK, ≥40%, moderate concentration of NPK, ≥30%, low concentration of N and P. Potassium content ≥ 25%, excluding trace elements and elements; water soluble phosphorus content ≥ 40%. Different nutrient content, there are differences in the number of applications and technical requirements, of course, the price is not the same.

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 fertilizer 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. Humic acid compound fertilizer is more effective than topdressing.

Fifth, based on the principle of balanced fertilization to buy compound fertilizer. Farmers and friends should usually contact agricultural technicians to understand the characteristics of the soil and the law of fertilizer requirements for crops. It is best to combine soil testing and fertilizer application. Based on the principle of balanced crop nutrition, a reasonable formulation based on soil testing results will be lacking. To achieve a balanced supply of crop nutrients. Finally, it should be noted that compound fertilizer nutrients are relatively fixed and must not be blindly selected and applied, nor can they be used as simple fertilizers to avoid unnecessary losses and waste.

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