天津农业科学2025，Vol.31Issue(12)：26-32,7.DOI:10.3969/j.issn.1006-6500.2025.12.005
甲哌鎓与调环酸钙对棉花产量和品质调控效应分析与研究
Analysis and Study of the Comparative Effects of Mepiquat Chloride and Prohexadione Calcium on the Yield and Fiber Quality in Cotton
摘要
Abstract
In order to explore the regulatory impacts of mepiquat chloride and prohexadione calcium on cotton yield and quality in the Huang-huai cotton region,the cotton cultivar Liaomian 21 was used as the material to analyse and compare the impacts on cotton yield-and fiber quality-related indices.The research revealed that for Liaomian 21 under the recommended spraying dosage(700 mL·hm-2),compared with Mepiquat chloride,Prohexadione calcium significantly increased the number of fruiting branches by 0.50 per plant,the number of bolls per plant by 0.50,the single-boll weight by 0.44 g,and the seed-cotton yield by 366.0 kg·hm-2,while also raising the proportion of reproductive-organ biomass in total plant biomass and better increasing the production.In terms of the impact on cotton fiber quality,compared with Prohexadione calcium,Mepiquat chloride significantly increased the uniformity index by 1.52 and decreased the micronaire value by 0.1,There were no significant differences in upper-half mean length,breaking tenacity,and elongation rate,Prohexadione calcium reduced the uniformity index,but there was no significant different effect on other fiber qualities.Regarding the regulation of endogenous hormones,Mepiquat chloride could inhibit the increase of GA1 and GA4 hormones,while Prohexadione calcium only had an inhibitory effect on GA1 hormone,with an insignificant inhibitory effect on GA4 hormone.Un-der the recommended dosage,Prohexadione calcium increased the number of fruit branches,number of bells,and single bell weight compared to Mepiquat chloride,while the yield of seed cotton increased by 7.11％.In terms of regulation of cotton fibers quality,Mepiquat chloride improved the uniformity index and reduced the micronaire value,while no significant differences were oberved in other fiber quality indices.关键词
甲哌鎓/调环酸钙/棉花/产量及构成因素/纤维品质相关性状Key words
Mepiquat chloride/Prohexadione calcium/cotton/yield and yield-related traits/fiber quality-related traits分类
农业科技引用本文复制引用
尹会会,李晓宇,李庆恩,程倩倩,闻小霞,黄义春..甲哌鎓与调环酸钙对棉花产量和品质调控效应分析与研究[J].天津农业科学,2025,31(12):26-32,7.基金项目
"国家棉花产业技术体系-鲁西综合试验站"(CARS-15-33) （CARS-15-33）
"抗逆优质适宜机采突破性棉花品种选育"(2024YD87) （2024YD87）
"山东省棉花产业技术体系—聊城综合试验站"(SDAIT-03-17) （SDAIT-03-17）
