不同种植密度对辽棉52产量和品质的影响  

Effects of Different Planting Densities on Yield and Quality of Liaomian 52

作　　者：王巍[1] 赵志强 高艳平[1] 王子胜[1] WANG Wei(Liaoning Research Institute of Cash Crops,Liaoyang,Liaoning 111000)

机构地区：[1]辽宁省农业科学院,辽宁辽阳111000

出　　处：《园艺与种苗》2023年第3期78-79,82,共3页Horticulture & Seed

基　　金：国家棉花产业技术体系辽河综合试验站(CARS-15-31);国家重点研发计划——七大作物育种专项(SQ2018YFD-010081,2017YFD0101601,2016YFD0101412)。

摘　　要：[目的]探究不同种植密度下辽棉52的农艺性状和产量。[方法]以辽棉52为试验材料,采取随机区组设计,研究不同种植密度对辽棉52主要农艺性状、产量和纤维品质的影响,并筛选适宜种植密度。[结果]随着种植密度的增加,茎秆直径、铃重、上半部平均长度、整齐度指数呈下降趋势,棉花株高及衣分呈增加趋势,第1果枝着生高度、单株果枝数、霜前花率、籽棉产量、皮棉产量、霜前皮棉产量、纤维断裂比强度、马克隆值、伸长率则先升后降。综合考量棉花农艺性状、产量和纤维品质,辽棉52的适宜种植密度为105000株/hm2。[结论]该研究可为棉花栽培提供理论基础。[Objective]The aim was to study agronomic characters and yield of Liaomian 52 under different planting densities.[Method]The effects of different planting densities on agronomic characters,yield and fiber quality of Liaomian 52 were studied by random block design,and the suitable planting densities were screened.[Result]With the increase of planting density,stem diameter,boll weight,average length of upper half and uniformity index showed a decreasing trend,while plant height and lint percentage of cotton showed an increasing trend,while the height of first fruit branch,number of fruit branches per plant,pre-frost flower rate,seed cotton yield,lint yield,pre-frost lint yield,fiber breaking ratio strength,macron value and elongation increased first and then decreased.Considering the agronomic characters,yield and fiber quality of cotton,the optimal planting density of Liaomian 52 was 105000 plants/hm2.[Conclusion]This study could provide a theoretical basis for cotton cultivation.

关 键 词：辽棉52 种植密度 农艺性状 产量 纤维品质 

分 类 号：S562[农业科学—作物学]