新疆农业科学2025，Vol.62Issue(5)：1051-1063,13.DOI:10.6048/j.issn.1001-4330.2025.05.002
不同用量滴灌水与缩节胺协同打顶对新疆机采棉群体结构产量品质的影响
Effects of different amounts of drip irrigation water and DPC on population structure,yield,quality and production cost of machine-picked cotton in Xinjiang
摘要
Abstract
[Objective]To explore the regulation effect of drip irrigation-chemical control collaborative management on cotton and the cotton planting management measures to further improve the efficiency of cotton planting.[Methods]The new machine-picked cotton variety Huiyuan 720 was used as the test material,and the two-factor split-plot design was adopted.The drip treatment was set as the main area,and three levels of 6,000 m3/hm2(W1),4,500 m3/hm2(W2)and 3,000 m3/hm2(W3)were set.The dose of mepiquat chloride(DPC)in the topping stage(July 4)was set as the sub-area,and 90 g/hm2(D1)was set.180 g/hm2(D2);270 g/hm2(D3),and artificial topping as control CK.Then the canopy structure,dry matter accumulation,yield and quality of each treatment were measured.[Results](1)The increase of leaf area index of whole plant in W1 and W2 treatments was significantly higher than that in W3 treatment by 32.42％and 18.96％.The canopy openness in W3CK treatment was significantly higher than those in W1 CK and W2CK treatments by 47.83％and 17.24％.Light transmittance increased with decreasing drip water and increasing DPC dose.Reflectivity decreased with decreasing drip water and increasing DPC dose.(2)The to-tal dry matter accumulation exhibited the sequence W1＞W2＞W3;D1＞D2＞D3＞CK.The proportion of dry matter in reproductive organs in W3CK,W2D2 treatments was significantly higher than that in W1D1 treatment by 16.67％and 9.52％.The seed cotton yield and lint yield of W2D2 treatment were notably high.[Conclu-sion]In summary,under the experimental conditions,employing a drip volume of 4,500 m3/hm2 alongside 180 g/hm2 of DPC proves effective in reducing planting costs while also regulating the accumulation and distri-bution of dry matter.关键词
棉花/缩节胺/冠层结构/产量构成/纤维品质/植棉成本Key words
cotton/mepiquat chloride/canopy structure/yield components/fibre quality/cotton planting cost分类
农业科技引用本文复制引用
廖兴洋,王方永,傅积海,陈伟明,韩焕勇..不同用量滴灌水与缩节胺协同打顶对新疆机采棉群体结构产量品质的影响[J].新疆农业科学,2025,62(5):1051-1063,13.基金项目
国家棉花产业技术体系(CARS-15-25) （CARS-15-25）
国家自然科学基金项目(31760369,32260540) China Agriculture Research System(CARS-15-25) （31760369,32260540）
Projects of National Natural Science Foundation of China(31760369,32260540) （31760369,32260540）
