摘要
为探索长江流域棉区棉花油后直播高效栽培技术，研究了播种期和密度对直播棉花生长发育和产量品质的影响。结果表明，在30000～60000株／hm2密度范围内，随着种植密度的增加，棉花株铃数和单铃重呈下降趋势，密度为50000株／hm2条件下的皮棉产量最高，极显著高于其他3种密度下的皮棉产量；比较不同播种期的皮棉产量，以早播处理（4月30日）为最高，极显著高于其他播期下的皮棉产量。密度对上半部纤维长度、整齐度指数、马克隆值和伸长率均无显著影响；低密度下（30000株／hm^2）的断裂比强度显著低于其它3种密度处理；播种期最迟的棉株在上半部纤维长度、马克隆值、伸长率和断裂比强度上与其它3个播期的相应水平上有显著差异。
In order to study the technology of the cotton high efficient direct seeding along Changjiang River area,four kinds of different densities had been designed in the field to study under direct seeding condition. The experiment was based on four treatments of different density which included 30 000 ~ 60 000 plants per hectare. The experiment studied the cotton yield and fiber quality influenced by the two factors. The results indicated that boll weight and fruit bolls per plant were gradually decreased by the growing density increased. The lint yield of 50 000 plants per hectare was the highest; among different date of seeding,the lint yield which planted on the 30 th of April was the largest. The fiber length,uniformity index,micronaire,tensile stretch have little effect and no significant difference by the growing density increased. The fiber strength of 30 000 plants per hectare was lower than that of the other three densities significantly.
出处
《作物研究》
2014年第6期597-601,共5页
Crop Research
基金
湖南省棉花产业体系栽培专家岗位项目(湘农业联[2012]278号)
关键词
棉花
密度
播期
产量
纤维品质
Cotton
Density
Date of seeding
Lint yield
Fiber quality
