摘要
运用Ｃｏｌｗｅｌｌ通过正交多项式转换建立综合效应函数的方法，对冬小麦４７个田间试验结果进行一元回归及多元逐步回归分析，发现正交多项式零次趋势系数和基础产量；氮、磷两因素一次趋势系数和土壤速效养分含量有一定的相关性，由此构造出包括土壤测试值在内的综合肥料效应函数．其推荐产量值和普通肥料效应函数计算结果接近，相关性很好；但两种方法推荐施肥量之间无相关性，本方法的推荐结果更接近实际．
From the regression analysis of 47 winter wheat field N,P fertilizer experi-ments,we found there were good correlation between zero trend coefficients of orthogonalpolynomial and base yield ,also correlation between linear trend coefficients of N,P and con-centration of some soil available nutrients,so we set up the integrated recommendation fertil-ization system which included some soil N,P testing values. Yield goals of this method weresimilar to the calculated results of normal fertilizer response functions ,the yield goals of twomethods had a good correlation,the results of our method are better.
出处
《仲恺农业技术学院学报》
1995年第2期7-13,共7页
Journal of Zhongkai Agrotechnical College
基金
国家八五科技攻关项目
关键词
正交多项式
综合肥料效应
施肥量
冬小麦
orthogonal polynomial, trend coefficients,integrated fertilizer function,eco-nomic fertilizer amount ,economic yield goal
