摘要
采用多元正交二次旋转回归设计田间试验测得的参数,经统计建模及模拟选优,得出麦后移栽亩产霜前籽棉150kg以上,籽棉200kg以上,皮棉75kg以上的农艺决策为:采用中17或豫4品种,4月22～26日育苗,苗龄40～45天,麦后亩栽4487～5210株.产量构成因素分析表明:要获得高产,应在确保密度的基础上,以力争株铃为主攻方向.成铃的空间分布为第1～2果节内围桃占67.45%～77.95%,中、下部果节成铃率占57.38%～91.15%.
According to the parameters obtained from field experiment based on muti-element quadratic revolving regression design and through the simulation and optimume selection by computer,the agronomic measures for transplanting cotton after winter wheat harverst to product more than 150kg unginned cotton before frost ,200kg unginned cotton and 75kg ginned cotton per mu were established such as raising seedling from April 22 to 26 for Zhong No. 17 or Yu No. 4 cultivars ,40~45 days of seedling age, transplanting density 4487~5210 plant per mu. The analysis of yield component factors showed that in order to have high yield,the major measure was to yuarantee the boll numbers per plant as well as planting density. Boll distribution in space was 67. 45%~77. 95% inner boll of the frist and second fruit branch and 57. 38%~91.15% for middle and low fruit branch .
出处
《河南职业技术师范学院学报》
1992年第3期40-44,共5页
Journal of Henan Vocation-Technical Teachers College
关键词
棉花
育苗
麦后移栽
产量
移栽
cotton,raise seedling,transplanting after wheat harverst,regression model,simulation and optimume selection
