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磷肥施入土壤后,因移动性小易被土壤固定,不易被植物吸收利用。怎样才能既充分发挥其肥效稳而长的优势,又可使其肥效充分发挥,做到经济用肥,其方法有以下几种: 1.因土选肥 土壤酸碱度对磷肥肥效影响很大,难溶性磷肥(如磷矿粉等)和弱酸溶性磷肥(如钙镁磷肥等)应施在酸性土壤上;水溶性磷肥(如过磷酸钙等)适应范围较广,可用于各种土壤,一般在中性土壤上施用效果更好。
Phosphates applied to the soil, due to easy to move easily fixed by the soil, not easily absorbed by plants. How to give full play to its advantages of stable and long-term fertilizer efficiency, but also make its full use of fertilizer to achieve economic use of fertilizer, the methods are the following: 1. Because of soil selection pH value of soil fertilizers have a great impact on fertilizer efficiency, it is difficult Soluble phosphate fertilizer (such as phosphate rock, etc.) and weak acid soluble phosphate fertilizer (such as calcium magnesium phosphate fertilizer, etc.) should be applied to acid soil; water soluble phosphate fertilizer (such as superphosphate, etc.) to adapt to a wide range of soil can be used, Neutral soil application better.