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近年来全国化肥网对于化肥的施用配比问题开展了全国范围内的联试工作。各地取得了不少满意的成果。本文在大量田间试验的基础上,通过统计分析,对华北平原潮土区麦田土壤氮磷化肥施用比例问题作了一些探讨。一、材料与方法从1981年至1983年先后安排了十处田间小区试验。试验按全国化肥网制定的统一方案进行,六个处理,三次重复,随机排列,小区面积0.03—0.05亩。为了使上述研究工作在华北平原潮土区具有较广泛的代表性,本文引用了河北省化肥网1981—1983年度关于氮、磷化肥施用比例试验中的有关部
In recent years, the national fertilizer network for the application of fertilizer ratio carried out nationwide joint test work. Many satisfactory results have been made everywhere. Based on a large number of field experiments, this paper made some discussions on the proportion of nitrogen and phosphorus fertilizers in the wheat field in the Chao soil in North China Plain based on the statistical analysis. First, materials and methods From 1981 to 1983 has arranged for ten field trials. Test by the National Fertilizer Network developed a unified program, six treatment, three repetitions, random arrangement, the plot area of 0.03-0.05 acres. In order to make the above research work have a broad representation in the Chaohu Plain in the North China Plain, this paper quoted the relevant department of Hebei Fertilizer Network 1981-1983 on the proportion of nitrogen and phosphorus fertilizers