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微量元素肥料应用区划研究,系上海市农业委员会下达的科研任务。根据11年田间和盆栽试验得出的微肥效应,将全市农业耕地中硼、锌、钼、锰4种微量元素含量、分布及大田作物的增产效应,综合土壤中pH值、有机质、N、P、K施用水平及土壤质地,运用微型计算机建立的数据管理系统进行相关分析,并建立多元非线性统计模型,选择其最佳模型制定区划分级标准,由计算机进行分级和归类,并据此确定全市各种微量元素肥料的应用区划。
Application of trace element fertilizer zoning research, the Shanghai Municipal Commission of Agriculture issued scientific research tasks. According to the effect of trace fertilizers obtained from field and pot experiment in 11 years, the content, distribution of four trace elements, boron, zinc, molybdenum and manganese in agricultural cultivated land in the whole city and the yield increasing effect of field crops were summarized. The effects of pH, organic matter, N, P, K application level and soil texture, using the data management system established by microcomputer to conduct correlation analysis, and establish multivariate nonlinear statistical model, select the best model to develop zoning classification standards, classified and classified by computer Determine the city’s various trace element fertilizer application zoning.