我省为红壤地区,土壤酸性较重,能被作物吸收利用的有效磷颇感缺乏。过去一般以施用氮素肥料为主,很少注意磷肥的配合施用。当前常用的磷肥为骨粉和过磷酸鈣。骨粉肥效迟缓,除含有较多的磷外,还含有氮和少量的钾素,是一种完全肥料,充分腐熟 Red soil areas in our province, the soil is heavy, can be absorbed by the use of available phosphorus is quite lacking. In the past to the general application of nitrogen fertilizer, with little attention to the application of phosphate fertilizer. The commonly used phosphate fertilizer is bone meal and superphosphate. Bone fertilizer slow, in addition to containing more phosphorus, but also contains a small amount of nitrogen and potassium, is a complete fertilizer, fully decomposed