期刊论文

中文

棉花学报

1002-7807

2016

28

2

160-169

10.11963/issn.1002-7807.201602009

湖南省教育厅项目（14C0574） 湖南省大学生研究性学习和创新性实验计划项目（湘教通[2015]269号）

本校为第一机构

为探索棉花短季直播高产栽培技术模式,2014年在湖南农业大学浏阳试验基地,采用“311”最优回归设计方案研究了播期、密度和施氮量对早熟品种JX0010的产量构成及纤维品质的影响。对不同处理的棉铃时空分布、棉花产量及纤维品质的分析结果表明:不同处理棉铃时间分布上以秋桃比例最大,空间分布上纵向分布以中下部成铃数所占比例大,横向分布以内围铃为主。根据结果,建立了3个栽培因子施氮量(x_1)、密度(x_2)、播种期(x_3)与子棉产量的多项式回归方程:y=213.522+3.9331x_1+6.414x_2-21.4619x_3-5.7541x_1~2-4.321x_2~2- 7.5348x_3~2-11.982x_1x_2-0.1645x_1x_3+3.5747x_2x_3 。分析回归方程得出, 单因...

This study explored the effect of the short-season and direct seeding cultivation on cotton yield levels at the Liuyang experimental base of Hunan Agricultural University in 2014. The "311" optimal regression design was performed to investigate the effects of sowing date, planting density, and nitrogen application rate on yield components and fiber quality of early-maturing variety JX0010. The effects of different treatments on the temporal and spatial distribution, cotton yield, and fiber quality of cotton were analyzed. The results showed tha...