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近年来,各地普遍施用化肥,对水稻增产起了重大作用。究竟每亩施用多少化肥才能获得高产,必须经过实践证明。1980年,我们在双季早晚稻高产栽培的施肥试验中,对氮肥(尿素)的施用进行了研究,亩产达800斤以上。为了进一步提高双季稻产量,1981年至1982年,我们对如何合理施用氮、磷、钾化肥问题,作了初步研究,兹将试验结果综述如下。
In recent years, the widespread application of chemical fertilizers has played a significant role in increasing rice yield. How much fertilizer per acre can be obtained in order to achieve high yield, must be proved by practice. In 1980, we conducted a study on the application of nitrogen fertilizer (urea) in the fertilization experiment of high yielding cultivation in early and late rice in double seasons, with a yield of more than 800 kg per mu. In order to further improve the yield of double crop rice, we made a preliminary study on how to rationally apply nitrogen, phosphorus and potassium fertilizers from 1981 to 1982. The results of the experiment are summarized as follows.