为了弄清我省中低产稻田化肥对水稻的增产效应,以及氮磷钾适宜用量和配合比例,1983年我们同有关农业科研单位进行多点试验,共收到试验报告43份(早稻16份,晚稻27份).经系统分析,其中有6份试验因地力不匀等原因剔除外,现将37份结果汇总分析如下. In order to clarify the yield-increasing effect of middle-low yielding paddy fertilizers on paddy rice and the appropriate amount and proportion of NPK in 1983, we conducted a number of experiments with relevant agricultural research institutes and received 43 test reports (16 for early rice, 27 late rice) .After systematic analysis, of which 6 were excluded due to reasons such as uneven soil, the 37 results are summarized below.