山药栽培数学模型及优化农艺的研究.PDFVIP

中国农学通报 第20卷 第1期 2004年2月 79 农艺科学 – – 山药栽培数学模型及优化农艺的研究* 1 2 1 3 4 孙启善 ,王庆亚 ,孙敦恒 ,金银根 ,王伟中 1 2 3 4 (丰县淮海农业科学新技术研究所;南京农业大学;扬州大学;江苏省淮安农科所 221700) 提 要：对山药综合栽培措施进行了二次旋转回归正交试验，建立了优化产量模型，根据数学中函数极大 值的概念和农业经济学边际效应理论，分析了5个试验因素的关系，筛选了优化产量数学模型的山药农艺 措施，并分别求出五因素中4个因素处于平均水平时，山药获取最高产量和最大经济效益(优质产品最高) 的山药种块重量、种植密度和氮、磷、钾施用量。为总结山药高产、优质配套栽培、优化农艺措施提供了 可靠的科学依据。 关键词：山药;种块大小;密度;施肥量;旋转回归正交试验;数学模型 Studies on Mathematical Modes of Planting and Optimizing Agricultural Characters of Yam Sun Qishan,Wang Qingya,Sun Dunheng,Jin Yingen,Wang Weizhong 1 2 ( Institute of Huihai Agricultural Sciences and New Technology; Nanjing Agricultural University; 3 4 Yangzhou University; Institute of Agricultural Sciences in Hui -an, Jiangsu Province 221700) Abstract: Integrative planting methods of Yam have been positively tested with two times rotary regression, and the modes of optimizing output has been set up. And the relationship of five testing factors was analyzed with the conception of maximum in Math and the theory of marginal utility of agricultural economics. And the relationship between harvesting the highest output, getting the highest economical effects of Yam (high quality, highest effects) and the weight of earthnut of Yam, the density of planting and the dosage of fertilization of N, P and K was calculated with the average of four factors in five factors. Our aim is to summarize the methods of high output, high quality and optimized agricultural charac