Xinjiang Agricultural Sciences ›› 2023, Vol. 60 ›› Issue (11): 2661-2666.DOI: 10.6048/j.issn.1001-4330.2023.11.008

• Crop Genetics and Breeding · Germplasm Resources·Molecular Genetics·Soil Fertilizer • Previous Articles     Next Articles

Effects of defoliants on defoliation, yield and quality of machine-picked cotton in different planting modes

JIANG Congjun1,2(), Alifu Aierxi1,2, LIN Tao1,2, SHA Hong1, ZHENG Zipiao1, Nuermanguli Wupuer3, JIANG Zhengjun3, CUI Jianping1,2, GUO Rensong1,2, WANG Liang1, ZHANG Na1   

  1. 1. Institute of Economic Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
    2. Key Laboratory of Desert-Oasis Crop Physiology, Ecology and Cultivation, Ministry of Agriculture and Rural Affairs, Urumqi 830091, China
    3. Bachu Agricultural Technology Extension Center, Bachu Xinjiang 843800,China
  • Received:2023-01-30 Online:2023-11-20 Published:2023-12-07
  • About author:JIANG Congjun (1965-), Male, Urumqi, Xinjiang, promotion research fellow of, The research direction is cotton cultivation,(E-mail)1612786082@qq.com
  • Supported by:
    The Open Project of Key Laboratory of Desert-Oasis Crop Physiology, Ecology and Cultivation, MOARA(25107020-201907);The Open Project of the National Key Laboratory(CB2019A16)

脱叶剂对机采棉不同种植模式脱叶效果、产量及品质的影响

蒋从军1,2(), 阿里甫·艾尔西1,2, 林涛1,2, 沙红1, 郑子漂1, 努尔曼古丽·吾甫尔3, 蒋争军3, 崔建平1,2, 郭仁松1,2, 王亮1, 张娜1   

  1. 1.新疆农业科学院经济作物研究所,乌鲁木齐 830091
    2.农业农村部荒漠绿洲作物生理生态与耕作重点实验室,乌鲁木齐 830091
    3.巴楚县农业技术推广中心,新疆巴楚 843800
  • 作者简介:蒋从军(1965-),男,新疆乌鲁木齐人,推广研究员,研究方向为棉花栽培,(E-mail)1612786082@qq.com
  • 基金资助:
    农业农村部荒漠绿洲作物生理生态与耕作重点实验室开放课题(25107020-201907);棉花生物学国家重点实验室开放课题(CB2019A16)

Abstract:

【Objective】 To study the effects of defoliants on defoliation, yield and quality of machine-picked cotton in southern Xinjiang. 【Methods】 The 4 machine-picked cotton planting modes were set up, one film six lines K1[(12 cm+64 cm+12 cm+64 cm+12 cm)+64 cm]×11 cm; one film three lines K2[(76 cm+76 cm)+76 cm]×5.6 cm; one film three lines K3[(76 cm+76 cm)+76 cm]×9.5 cm; one film four lines K4[(12 cm+64 cm+12 cm)+64]cm×11 cm. during the cotton fluffing period, the effects of defoliation, yield and quality were analyzed under different planting patterns after spraying defoliation ripening agent. 【Results】 There were no significant difference in defoliation rate and fluffing rate in 25 days after spraying defoliation and ripening agent in different planting modes. The K1 planting mode had the highest yield, and the seed cotton yield was respectively 5.15%, 8.7%, and 4.5% higher than those of the K2, K3, and K4 planting modes in 2020. After spraying the defoliant ripening agent, there was no significant difference in uniformity of length of cotton fiber, specific breaking strength, micronaire, elongation at break, staple fibre index and maturity between different planting patterns.【Conclusion】 There is no significant difference in defoliation rate and flocculation rate among different planting modes after spraying defoliation and ripening agent. Spraying defoliation and ripening agent has little effect on cotton fiber quality,cotton yield is the highest under the mode of one film six lines.

Key words: cotton; defoliant; planting pattern; defoliation effect; quality

摘要:

【目的】 研究脱叶剂对新疆南疆机采棉不同种植模式脱叶效果、产量及品质的影响。【方法】 设4种机采棉种植模式,1膜6行K1[(12 cm+64 cm+12 cm+64 cm+12 cm)+64 cm]×11 cm;1膜3行K2[(76 cm+76 cm)+76 cm]×5.6 cm;1膜3行K3[(76 cm+76 cm)+76 cm]×9.5 cm;1膜4行K4[(12 cm+64 cm+12 cm)+64 cm]×11 cm。在棉花吐絮期喷施脱叶催熟剂,分析对棉花不同种植模式脱叶效果、产量及品质的影响。【结果】 不同种植模式喷施脱叶催熟剂后25 d脱叶率无显著差异、吐絮率无显著差异。K1种植模式产量最高,籽棉产量分别较K2、K3、K4种植模式高5.15%、8.7%、4.5%。喷施脱叶催熟剂后,不同种植模式间棉纤维长度整齐度、断裂比强度、马克隆值、断裂伸长率、短纤维指数、成熟度间无显著差异。棉纤维上半部平均长度K1、K2、K3间无显著差异,K2与K3较K4高,有显著差异。【结论】 喷施脱叶催熟剂后不同种植模式间脱叶率、吐絮率均无显著差异。喷施脱叶催熟剂对棉纤维品质影响较小。1膜6行模式棉花产量最高。

关键词: 棉花, 脱叶剂, 种植模式, 脱叶效果, 品质

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