After years of application of ammonium dihydrogen phosphate, the fertilizer effi

发布时间:2018-07-16 15:02 | 编辑:广西东林食品化工有限公司英文版 | 0 次浏览
After years of application of ammonium dihydrogen phosphate, the fertilizer efficiency is not ideal, why?​Ammonium dihydrogen phosphate is a binary compound fertilizer containing 18% nitrogen (N) and 46% phosphorus (P205). It is a low-nitrogen, high-phosphorus fertilizer that works particularly well on phosphorus-deficient soils. Many farmland soils in China are deficient in phosphorus. F...

After years of application of ammonium dihydrogen phosphate, the fertilizer efficiency is not ideal, why?


Ammonium dihydrogen phosphate is a binary compound fertilizer containing 18% nitrogen (N) and 46% phosphorus (P205). It is a low-nitrogen, high-phosphorus fertilizer that works particularly well on phosphorus-deficient soils. Many farmland soils in China are deficient in phosphorus. Farmers initially applied ammonium dihydrogen phosphate to various crops to increase production.


First, the application of ammonium dihydrogen phosphate for many years is not ideal, which is why?


Ammonium dihydrogen phosphate is a binary compound fertilizer with low nitrogen and high phosphorus. In the soil with phosphorus deficiency, no matter what kind of crop, no obvious increase in yield can be achieved in the first year. This is because the fertilization is the way to solve the main contradiction of phosphorus deficiency in the crop and phosphorus deficiency in the soil. If only ammonium dihydrogen phosphate is applied in a year, and nitrogen-containing fertilizer is not added, the effect is not good. This is because the old contradiction of soil phosphorus deficiency has been solved, and the shortage of nitrogen has become a new contradiction affecting the increase of crop yield.


Second, why is it not good to apply ammonium dihydrogen phosphate fertilizer for years?


Phosphate fertilizer is different from nitrogen fertilizer. It only produces chemical fixation of phosphorus and reduces fertilizer efficiency. Unlike nitrogen fertilizer, there are losses such as volatilization, leaching and denitrification of nitrogen and nitrogen. Therefore, the actual utilization rate of phosphate fertilizer is very high. It is very different from the low utilization rate of nitrogen fertilizer. Therefore, long-term application of ammonium dihydrogen phosphate, the content of available phosphorus in the soil will increase quickly.


Reasonable application of ammonium dihydrogen phosphate must be based on the change of available phosphorus content in the soil, timely adjustment of fertilization formula, combined with phosphorus and potassium fertilizer, in line with the principle of balanced fertilization, give full play to its stimulation.


3. How should farmers rationally apply ammonium dihydrogen phosphate?


On the one hand, it is necessary to correctly understand that ammonium dihydrogen phosphate is not a versatile fertilizer. It is a compound fertilizer with low nitrogen and high phosphorus. It is used on soils lacking phosphorus, no matter what kind of crops are effective. On the other hand, it should be known that phosphate fertilizer can not replace nitrogen fertilizer. Don't forget that crops need various nutrients. Long-term use of ammonium dihydrogen phosphate as base fertilizer will inevitably reduce nitrogen and potassium deficiency. Therefore, it is necessary to apply single nitrogen fertilizer and potassium fertilizer. Balanced fertilization will increase crop yields.


Which is better for ammonium dihydrogen phosphate?  Guangxi Donglin Food Chemical Co., Ltd.!


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