In recent years, soil testing and formula fertilization has become an important technical measure for fruit cultivation. However, some soil testing and fertilizer enterprises may easily cause secondary salinization of the soil due to the difference in fertilizer types during the fertilizer application process, which will destroy the soil fertility.
Soil testing and formula fertilization is not only the ratio of nitrogen, phosphorus and potassium. The salt efficiency index of fertilizer is usually used to indicate the effect of different fertilizer types on increasing the osmotic pressure of soil solution. The salt effect index of various fertilizers is different, and the salt accumulation effect after applying it to the soil is also different. The greater the salt efficiency index of the fertilizer, the greater the potential for soil salt damage. The salt effect indexes of superphosphate, diammonium phosphate and potassium sulfate are 8, 34, 46, respectively, while the commonly used urea, ammonium nitrate and potassium chloride salt index are as high as 75, 105, 116, which is easy to cause in Huanghuaihai area. Soil salt accumulation.
Therefore, in the soil testing and formula fertilization, we must consider the types of fertilizers and their effects on crop growth and soil chemical changes.
Soil testing and formula fertilization, can not neglect the application of organic fertilizer in the soil testing formula rational application of chemical fertilizers, the appropriate amount of organic fertilizer is an important measure to effectively prevent and reduce the phenomenon of soil surface salt accumulation, the application of organic fertilizer and the application of organic materials can also Change soil structure, increase soil buffering performance, improve soil microbial flora, improve soil nutrient availability, supplement trace elements, promote crop root growth, and reduce environmental pollution.
Soil testing and formula fertilization methods need to be further improved. The purpose of fertilization is to compensate for nutrient losses and insufficient organic matter in the soil. Therefore, in addition to the base fertilizer, the ditch is a better way, and the topsoil is wrong. In recent years, sprinkler irrigation and drip irrigation have been applied in facility cultivation, so that fertilizer and water conservation are not easy to damage the soil structure, soil compaction is not caused, and soil salinization is reduced.
Modern fruit industry
Soil testing and formula fertilization is not only the ratio of nitrogen, phosphorus and potassium. The salt efficiency index of fertilizer is usually used to indicate the effect of different fertilizer types on increasing the osmotic pressure of soil solution. The salt effect index of various fertilizers is different, and the salt accumulation effect after applying it to the soil is also different. The greater the salt efficiency index of the fertilizer, the greater the potential for soil salt damage. The salt effect indexes of superphosphate, diammonium phosphate and potassium sulfate are 8, 34, 46, respectively, while the commonly used urea, ammonium nitrate and potassium chloride salt index are as high as 75, 105, 116, which is easy to cause in Huanghuaihai area. Soil salt accumulation.
Therefore, in the soil testing and formula fertilization, we must consider the types of fertilizers and their effects on crop growth and soil chemical changes.
Soil testing and formula fertilization, can not neglect the application of organic fertilizer in the soil testing formula rational application of chemical fertilizers, the appropriate amount of organic fertilizer is an important measure to effectively prevent and reduce the phenomenon of soil surface salt accumulation, the application of organic fertilizer and the application of organic materials can also Change soil structure, increase soil buffering performance, improve soil microbial flora, improve soil nutrient availability, supplement trace elements, promote crop root growth, and reduce environmental pollution.
Soil testing and formula fertilization methods need to be further improved. The purpose of fertilization is to compensate for nutrient losses and insufficient organic matter in the soil. Therefore, in addition to the base fertilizer, the ditch is a better way, and the topsoil is wrong. In recent years, sprinkler irrigation and drip irrigation have been applied in facility cultivation, so that fertilizer and water conservation are not easy to damage the soil structure, soil compaction is not caused, and soil salinization is reduced.
Modern fruit industry
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