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调查和试验研究结果表明,由于多年施用磷肥后,一向是速效磷很低的砂姜黑土的磷素肥力有所提高,本文提出了因土、因作物施用磷肥以提高其肥效等措施.
The results of investigation and experimental study show that the phosphorus fertility of saprolium black soil, which has always been a very low available phosphorus, has been increased after many years of application of phosphate fertilizers. This paper presents some measures such as application of phosphate fertilizers to improve soil fertility.