棉花学报2017，Vol.29Issue(4)：356-364,9.DOI:10.11963/1002-7807.lazdhl.20170602
追施不同形态氮肥对不同钾效率基因型棉花生长及产量品质的影响
Effects of Different Nitrogen Applied on the Growth, Yield, and Fiber Quality of Cotton Genotypes with Different Potassium-Use Efficiency in Florescence
摘要
Abstract
[Objective] The purpose of this study was to characterize the changes to cotton growth,yield,and fiber quality induced by different nitrogen applied in florescence under different soil available potassium (K) concentrations.[Method] High K-use efficiency cotton genotypes (Jimian 958 and Liaomian 18) and a low K-use efficiency cotton genotype (NuCOTN99B) were grown in pots with low (38.01 mg·kg-1) or high (152.24 mg·kg-1) soil K concentrations.Ammonium sulfate (as ammonium nitrogen) or calcium nitrate (as nitrate nitrogen) was applied in florescence,respectively.[Result] The plants grown under low soil K conditions had lower first fruit node and fewer bolls than the plants exposed to high soil K contents.Additionally,the whole plant dry weight,total K accumulation,total K utilization index,and seed cotton yield were significantly higher in plants treated with a high soil K concentration.Furthermore,the NH4+ treatment produced shorter stems,fewer fruit branches and bolls,and lower seed cotton yields and the whole plant dry weight than the NO3 treatment.The NH4+ treatment also resulted in a lower accumulation of total K and a lower total K utilization index.[Conclusion] The low K-use efficiency cotton genotype was sensitive to the adverse effects ofNH4+ applied in florescence,which had more serious consequences for the later mature cotton cultivar.关键词
棉花/钾水平/氮素形态/生长发育/产量品质Key words
cotton/K level/N form/growth and development/yield and quality分类
农业科技引用本文复制引用
刘爱忠,郑苍松,李鹏程,孙淼,刘敬然,赵新华,董合林,石书兵..追施不同形态氮肥对不同钾效率基因型棉花生长及产量品质的影响[J].棉花学报,2017,29(4):356-364,9.基金项目
国家现代农业产业技术体系棉花产业技术体系项目(CARS-18-17) （CARS-18-17）
棉花高产液态肥技术的引进与成果应用(2016ZX08010005) （2016ZX08010005）
农业部行业专项(201503121) （201503121）
