鄱阳湖棉区棉花适于机械化采收的密度研究

The Study of Density for Mechanized Harvesting Cotton in Poyang Lake Cotton Region

为筛选出鄱阳湖棉区适于机械化采收的最佳密度,于2014年设119625株/hm2、101220株/hm2、87720株/hm2和77400株/hm24个处理,分别对其农艺性状、产量及品质进行分析和比较。结果表明:始果枝着生节位及高度、衣分和纤维品质等性状不同密度间差异不大,单株成铃数随着密度的升高逐渐降低,产量随密度的增加呈先升高后降低的趋势。综合分析表明鄱阳湖棉区棉花适于机械化采收较适宜的种植密度在90000株/hm2左右,株行距配置为行距76 cm,株距15 cm左右。

In order to screen out the optimum density which was suitable for mechanized harvesting in Poyang Lake cot-ton region.4 treatments were designed in 2014,119625strains ·hm2 ,101220 strains-hm2 ,87720 strains-hm2 and 77400 strains-hm2 ,respectively studied on the agronomic traits,yield and quality.The results showed that,there were not much ef-fects on a growing position and height of the first fruiting branch,lint percentage and fiber quality under different densities boll number per plant decreased gradually with increasing of the density,yield increased with the density increasing trend was first increased and then decreased,the suitable planting density at around 90000 plants-hm2 ,row spacing was that,76cm ×15cm at around in Poyang Lake cotton region.