棉花学报2025，Vol.37Issue(3)：194-208,15.DOI:10.11963/cs20250003
不同种植密度和品种对棉花生育期及干物质积累与分配的影响
Effects of different planting densities and varieties on growth stages and dry matter accumulation and distribution in cotton
摘要
Abstract
[Objective]This study aims to investigate the suitable planting density of different cotton varieties in southern Xinjiang and to provide a theoretical basis for the construction of high-yield cultivation model.[Methods]The experiment was conducted in Yuli County from 2023 to 2024,with five planting density levels:9.0 plants·m-2(D1),13.5 plants·m-2(D2),18.0 plants·m-2(D3),22.5 plants·m-2(D4),27.0 plants·m-2(D5),and three cotton varieties:Xinluzhong 79(C1),Xinluzao 73(C2),and Xinshi 518(C3).The optimal planting density was determined by measuring the cotton reproductive period,dry matter accumulation and distribution,and seed cotton yield.[Results]The growth period of cotton was prolonged as the density increased.With the increase of planting density,the maximum dry matter accumulation and maximum growth rate of vegetative organs,reproductive organs,and aboveground parts of C1 and C2 showed trends of increasing and then decreasing,peaking at D3.The average highest seed cotton yields were 6 458.66 kg·hm-2 at D3 for C1,and 6 083.64 kg·hm-2 at D3 for C2,respectively.For C3,the maximum dry matter accumulation and maximum growth rate of vegetative organs,reproductive organs,and aboveground parts continued to rise with the increase in planting density,and the highest seed cotton yield of 5 875.30 kg·hm-2 was reached at D5.The planting density does not show a clear pattern in its effect on the time at which different organs reach their maximum dry matter accumulation and the time at which they achieve their maximum growth rate.[Conclusion]For Xinluzhong 79 and Xinluzao 73 varieties,a planting density of 18 plants·m-2 is suitable,while for Xinshi 518 variety,a high-density cultivation pattern of 27 plants·m-2 is recommended.关键词
棉花/种植密度/品种/干物质积累与分配/籽棉产量Key words
cotton/planting density/varieties/dry matter accumulation and distribution/seed cotton yield引用本文复制引用
穆光荣,帕尔哈提·买买提,古丽娜孜·居来提,张立祯,马腾飞,杜鸿君,王雪姣,孙帅,巴特尔·巴克,李杰..不同种植密度和品种对棉花生育期及干物质积累与分配的影响[J].棉花学报,2025,37(3):194-208,15.基金项目
新疆"天山英才"培养计划"棉花轻简高效栽培技术创新团队"(2023TSYCTD004) （2023TSYCTD004）
新疆维吾尔自治区重大科技专项(2023A02003-6) （2023A02003-6）
