留叶枝条件下不同种植密度聊棉6号棉株产量的空间分布  

Spatial Distribution of Yield of Cotton Liaomian 6 with Different Planting Densities under Retaining Vegetative Branches

作　　者：商娜 杨中旭 李秋芝 尹会会 Shang Na;Yang Zhongxü;Li Qiuzhi;Yin Huihui(Liaocheng Academy of Agricultural Sciences,Liaocheng 252000,China)

机构地区：[1]聊城市农业科学研究院,山东聊城252000

出　　处：《山东农业科学》2018年第7期88-91,共4页Shandong Agricultural Sciences

基　　金：国家现代农业产业技术体系建设专项(CARS-18-37);山东省现代农业产业技术体系专项"山东省棉花创新团队-聊城综合试验站"(SDAIT-03-16)

摘　　要：以常规棉聊棉6号为试验材料,研究留叶枝条件下不同种植密度对成铃空间分布、产量和纤维品质的影响。结果表明:(1)产量主要分布在下中层(68.70%~70.97%)和内围(54.97%~71.91%),上层和外围产量分布较少。密度主要影响产量在棉株上的内外分布,随密度升高,产量向内围集中,密度对棉株的上下分布影响不大。(2)蕾铃脱落率随密度增高而增加,9.0株/m^2的蕾铃脱落率比3.0株/m^2增加11.9%。(3)籽棉产量、单位面积铃数、果枝和叶枝铃重、马克隆值均随密度增加而显著降低。(4)密度对叶枝和果枝的衣分及其它纤维品质指标无显著影响。The effects of plant density on spatial distribution,yield and fiber quality of conventional cotton Liaomian 6 with vegetative branches were investigated.The results were as follows.(1)The cotton yield was mainly distributed in the lower and middle fruiting branches(68.70%~70.97%)and inner fruit nodes(54.97%~71.91%),whereas less occurred in upper fruiting branches and extra fruit nodes.The plant density mainly affected the lateral distribution of yield,while had little effect on the longitudinal distribution of cotton plants.With the increase of density,the yield concentrated inward.(2)With the increase of density from 3 plants to 9 plants per square meter,the loss rate of bolls increased by 11.2%.(3)The seed cotton yield,bolls per unit area,boll weight of fruit and vegetative branches and micronan value decreased significantly with increasing of density.Nevertheless,there was no significant differences in lint percentage and other fiber quality indexes between fruit and vegetative branches.

关 键 词：聊棉6号 留叶枝 密度 空间分布 产量 

分 类 号：S562[农业科学—作物学]