施用化学肥料是粮棉增产的重要措施之一。为了明确化学肥料在和田专区对主要作物的增产效果,我所于一九六四年进行了玉米施用氮、磷、钾化肥效应的试验研究。试验地为砂壤土,每亩施厩肥3,000斤(基肥);化肥按不同处理单施或以同量1:1或1:1:1配合施用,每亩每种6斤,其中氮、钾分两次追施,磷一半作基肥,一半作追肥。初步结果如下: 一、氮素化肥有缩短玉米生育期的作用。所有施用氮素化肥的处理,供试品种维尔156的生育期均为110天,而不施肥、只施厩肥、单 Application of chemical fertilizers is one of the important measures to increase grain yield. In order to clarify the yield increase effect of chemical fertilizers on major crops in the Hotan Prefecture, I conducted an experimental study on the effects of applying nitrogen, phosphorus and potassium fertilizers on maize in 1964. Experimental soil and sandy soil, per mu of manure fertilizer 3,000 kg (base fertilizer); fertilizer according to the different treatment alone or with the same amount of 1: 1 or 1: 1: 1 with the application of 6 kg per acre, of which nitrogen, potassium Topdressing twice, phosphorus half as a base fertilizer, half for top dressing. The preliminary results are as follows: First, nitrogen fertilizer can shorten the growth period of corn. All the treatments with nitrogen fertilizers, the test variety Wilmar 156 had a growth period of 110 days without fertilization, only manure, single