我国南方旱地红壤面积大、分布广。由于其酸性较强,土壤固磷作用大,磷肥施用效果较低。几年来,我们对此进行了试验研究。认为提高旱地红壤磷肥施用效果,应采取如下措施。一、合理选用磷肥品种据试验,旱地红壤 pH<5.5时,以施用钙镁磷肥效果最好,其次是 China’s dry red soil in southern area, widely distributed. Due to its strong acidity, the role of soil phosphorus fixation, phosphate fertilizer application effect is low. In recent years, we conducted a pilot study. It is considered that the following measures should be taken to improve the application effect of phosphate fertilizer in dry land red soil. First, the rational use of phosphate fertilizer varieties According to the test, red soil pH of dry land was less than 5.5, the best use of calcium magnesium phosphate, followed by