Fertilizer mix should pay attention to what issues

According to years of experimental research and practical exploration, according to the characteristics of soil and the needs of crops, the scientific application of chemical fertilizers combined will not only increase the effectiveness of nutrients in fertilizers, but also improve the physical and chemical properties of fertilizers and reduce the labor intensity of farmers. To achieve a truly productive and efficient crop. However, the following three aspects should be paid attention to in the mixed application of chemical fertilizers: 1. Master the three principles of mixed application: after mixing, it is not possible to reduce any of the nutrients; no physical and chemical traits will be produced after mixing; the proportion of nutrients is certain. To adapt to the nutritional needs of the crop and soil fertility conditions. 2. To figure out which chemical fertilizers can be mixed, which chemical fertilizers can not be mixed, which chemical fertilizers can only be mixed but not long home. (1) Can be mixed. Except for nitrate nitrogen fertilizer, almost all chemical fertilizers can be mixed with organic fertilizers. Mixed application of organic fertilizer and chemical fertilizer can play the role of combination of speed, slowness, and complementarity. The chemical fertilizer can accelerate decomposition of organic fertilizer. Organic fertilizer can activate insoluble nutrients in fertilizer and increase the utilization of fertilizer. In addition, some fertilizers can not only be mixed, but also better after mixing. Such as ammonium sulfate, ammonium chloride and other biological acid nitrogen fertilizer mixed with phosphate rock, etc., can increase the solubility of phosphorus, enhance fertilizer efficiency, if used in calcareous soil, the effect will be better. Potassium chloride is mixed with ammonium nitrogen fertilizer. Chloride can inhibit soil nitrification and reduce nitrogen loss. The combined application of potassium chloride and ammonium nitrate can reduce the deliquescence and make physical properties better. (2) Not mixable. The use of some fertilizers will cause a large loss of nutrients and cause a great deal of waste. Alkaline fertilizers such as grass ash, lime, and slag phosphorous fertilizers must not be mixed with decomposed ammonium nitrate such as human waste, ammonium sulfate, ammonium nitrate, ammonium bicarbonate, ammonium chloride, etc. Otherwise, they will cause chemical reactions and ammonia will volatilize to cause nitrogen. Loss and available phosphorus are fixed; alkaline fertilizer such as grass ash and lime should not be mixed with superphosphate and phosphate rock powder, otherwise it will turn water-soluble nutrient into insoluble nutrient, and reduce phosphate fertilizer efficiency. Organic fertilizers cannot be mixed with nitrate nitrogen, otherwise denitrification will cause nitrogen loss. There is also not suitable ammonium ammonium sulfate, ammonia, kiln ash potash mixed application; ammonia should not be mixed with urea, potassium chloride, phosphate rock powder mixed; urea should not be mixed with calcium magnesium phosphate fertilizer, kiln ash potassium fertilizer, and so on. (3) Can be temporarily mixed but not long-lived. That is to say, although some fertilizers can be mixed, they must be applied immediately after mixing. For example, if nitrate-nitrogen fertilizer and superphosphate are mixed together, for example, nitrate-nitrogen fertilizer and superphosphate are mixed, the fertilizer decomposes moisture and is inconvenient to use. If it is not applied for a long time, nitrogen will be greatly lost, and effective phosphorus will be converted into insoluble phosphorus; urea and chlorine The long-term homeostasis of potassium, although no loss of nutrients, but it will increase moisture absorption, so that fertilizer agglomeration, it has brought difficulties. 3. About the mixing of foliar fertilizers and plant growth regulators with other fertilizers and pesticides. In general, the foliar fertilizers or plant growth regulators on the market are mostly acidic or neutral and can be mixed with acidic fertilizers and acidic pesticides, but should not be mixed with alkaline fertilizers such as lime and alkaline pesticides such as Bordeaux mixture. Application. Foliar fertilizers or plant growth regulators are properly mixed with acidic fertilizers and acidic pesticides. For example, adding nitrogen, phosphorus, potassium, boron, and zinc fertilizers to foliar fertilizers or plant growth regulators can not only reduce the frequency of fertilizer application, but also help each other. Increase efficiency, so that the effect of fertilizers to play better.

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