新疆农业大学学报2025，Vol.48Issue(6)：480-486,7.DOI:10.20088/j.cnki.jxau.2025.06.004
施氮量对不同品种棉花生长发育及产量形成的影响
Effects of Nitrogen Fertilizer Treatment on the Growth and Development and Yield Components of Different Cotton Varieties
摘要
Abstract
Different cotton varieties exhibit significant differences in their fertilizer requirement character-istics.Clarifying the nitrogen response characteristics of various cotton varieties can effectively enhance the efficiency of cotton fertilization.This experiment employed a two-factor randomized block design,invol-ving four cotton varieties:Lumianyan 24,Xinluzao 45,Xinluzao 50,and Xinluzao 62.There were four nitro-gen application levels:no nitrogen(control),120,240,and 360 kg/hm2,resulting in a total of 16 treat-ments.Each treatment was repeated three times to investigate the response patterns of cotton leaf area in-dex(LAI),leaf SPAD value,leaf nitrogen content,and yield to nitrogen fertilizer.The results indicated that there was a significant interaction effect between nitrogen application rate and variety on LAI,SPAD value,and leaf nitrogen content(P<0.05).Xinluzao 62 had significantly higher leaf nitrogen content and yield under the 360 kg/hm2 treatment compared to other varieties,with a single boll weight and seed cotton yield reaching up to 6.15 g and 6 293.5 kg/hm2,respectively(P<0.05),showing significant differences across nitrogen treatments.Xinluzao 50 achieved a seed cotton yield of 5 018.5 kg/hm2 under the 360 kg/hm2 treatment,significantly increasing by 37.8%,22.6%,and 10.6%(P<0.05)compared to the no nitrogen(control),120,and 240 kg/hm2 nitrogen treatments,respectively.Xinluzao 45 achieved a seed cotton yield of 5 672.5 kg/hm2 under the 360 kg/hm2 treatment,significantly increasing compared to the no nitrogen(control)and 120 kg/hm2 nitrogen treatments(P<0.05),there were no significant differ-ences in seed cotton yield between the 240 kg/hm2 treatments(P>0.05).Lumianyan 24 had an overall lower yield,reaching 5 042.5 kg/hm2 under the 360 kg/hm2 treatment.In summary,all varieties per-formed optimally under the 360 kg/hm2 nitrogen application treatment.关键词
棉花/施氮量/品种/叶片氮含量/产量Key words
cotton/nitrogen application rate/cultivar/leaf nitrogen concentration/yield分类
农业科技引用本文复制引用
印彩霞,姚纹佩,张昊,陈思元,王振洋,汤秋香..施氮量对不同品种棉花生长发育及产量形成的影响[J].新疆农业大学学报,2025,48(6):480-486,7.基金项目
国家重点研发计划项目(2024YFD2300604-3) （2024YFD2300604-3）
