高温多雨的华南地区,酸性红壤的面积很大。红壤的生产力低,缺乏有效性磷。而施用磷肥的效果又常常极不显著,尤其是磷矿粉的效果更差,难于推广下去。因此,如何提高土壤中磷的效果,是农业生产中的重要课题。长期的生产实践和科学研究表明,施用石灰和有机质对于提高磷效都有一定的作用。本文试根据前人研究的一些成果,对此问题作初步的探讨。由于水平关系,错误之处一定不少,敬请同志们指正。 High temperature and rainy South China, acidic red soil area is very large. Red soil productivity is low, the lack of effective phosphorus. However, the effect of applying phosphate fertilizer is often very insignificant. In particular, the effect of phosphate rock is worse and it is difficult to promote it. Therefore, how to improve the effect of phosphorus in soil is an important issue in agricultural production. Long-term production practices and scientific studies have shown that the application of lime and organic matter have a role in improving phosphorus efficiency. This article tries to make preliminary discussion on this issue based on some achievements of previous studies. Due to the horizontal relationship, a lot of mistakes, please comrades correct me.