种植密度对光籽棉新研9648产量性状的影响  

Effect of Planting Density on the Yield Traits of Naked Seed Cotton Variety Xinyan 9648

作　　者：职明星[1] 李勇超[1] 李秀菊[1] 

机构地区：[1]河南科技学院,河南新乡453003

出　　处：《安徽农业科学》2009年第24期11514-11515,11550,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究不同种植密度对新研9648产量性状的影响。[方法]以新研9648为试验材料,田间试验分别设置7个种植密度(15 000、22 500、30 000、37 500、45 000、52 500、60 000株/hm2),收摘后测定铃数、产量、衣分等指标,研究不同的种植密度对新研9648产量性状的影响。[结果]种植密度在15 000～60 000株/hm2时,新研9648的产量随种植密度的增加而上升,其最佳种植密度为37 500株/hm2。种植密度对新研9648的单株铃数和单铃重影响显著;霜后花率和僵瓣率随种植密度增加均有下降的趋势;衣分与种植密度没有明显的相关性。[结论]适宜密植可以减少新研9648的霜后花和僵瓣花,提高新研9648的产量,减少单株铃数和单铃重降低对产量的影响。[ Objective ] The aim was to study the effects of different planting densities on the yield traits of Xinyan 9648. [ Method ] With Xinyan 9648 as tested material, 7 planting densities of 15 000, 22 500, 30 000, 37 500, 45 000, 52 500, 60 000 plant/hm^2 were set up in the field experiment. After harvest some indices such as boll number, yield and lint percentage were determined to study the effects of different planting densities on the yield traits of Xinyan 9648. [ Result] When the planting densities were 15 000 -60 000 plant/hm^2, the yield of Xinyan 9648 was increased along with the increasing of planting density arid the optimum density was 37 500 plant/hm^2. Planting density had significant effect on boll number per plant and single boll weight; the rates of postfrost harvested seedfibre and dead boli had a reducing trend as the planting density was increased; the lint percentage and planting density had no significant correlation. [ Conclusion ] The suitable dense planting could reduce the postfrost harvested seedfibre and dead bolls of Xinyan 9648, enhance its yield and reduce the effects of boll number per plant and single boll weight on its yield.

关 键 词：棉花 密度 产量性状 

分 类 号：S572[农业科学—烟草工业]