我省磷矿粉肥肥效试验是从1953年开始的。当时用的是有效磷含量较低的江苏省海州磷矿粉肥,每亩用量30余斤,试验都是在各个试验单位高肥基础上进行的,所以一般没有表现显著的增产效果。1964—1966年曾在全省有计划地用本省荆襄磷矿粉肥进行试验,试验时间不长,施用量大部分为每亩70斤,施用方法均为直接撒施。近年来各地又进行了一些磷矿粉肥试验。本文是根据我 Phosphorus fertilizer fertilizer efficiency test in our province from 1953 onwards. Was used at the time of the lower effective phosphorus content in Jiangsu Province, Haizhou phosphate rock fertilizer, the amount of more than 30 pounds per mu, the tests are carried out on the basis of the high test units, so generally did not show significant yield increase. 1964-1966 years in the province have been planned with the province’s phosphate rock phosphate fertilizer test, the test time is not long, most of the amount of 70 kg per acre, application methods are directly cast. In recent years, some phosphorite fertilizer tests have been conducted in various places. This article is based on me