Some people have increased their use of chemical fertilizers due to the lack of scientific and rational use of fertilizers. However, due to heavy chemical fertilizers, organic fertilizers, or the application of chemical fertilizers alone, or the ratio of nitrogen, phosphorus and potassium is not reasonable, soil compaction and fertilizer are often caused. Low utilization.
According to the analysis, in the case of equal application of nitrogen and phosphorus, the reasons for the alternate use of chemical fertilizers are more than the single use. First, the long-term continuous use of any kind of fertilizer, the residual accumulation may change the physical and chemical properties of the soil, if several When the varieties are used interchangeably, this effect will be minimized. Second, the alternate use of different varieties of fertilizers can increase the content of different elements of the soil and facilitate the selection and utilization of crops. Therefore, when alternately using fertilizer varieties, multiple suitable varieties can be selected and used alternately.
According to the analysis, in the case of equal application of nitrogen and phosphorus, the reasons for the alternate use of chemical fertilizers are more than the single use. First, the long-term continuous use of any kind of fertilizer, the residual accumulation may change the physical and chemical properties of the soil, if several When the varieties are used interchangeably, this effect will be minimized. Second, the alternate use of different varieties of fertilizers can increase the content of different elements of the soil and facilitate the selection and utilization of crops. Therefore, when alternately using fertilizer varieties, multiple suitable varieties can be selected and used alternately.
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