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中国农学通报 ›› 2023, Vol. 39 ›› Issue (6): 26-34.doi: 10.11924/j.issn.1000-6850.casb2022-0272

所属专题: 生物技术 棉花

• 农学·农业基础科学 • 上一篇    下一篇

海岛棉品系对脱叶剂喷施时间及频次的响应研究

白玉林(), 王承强, 杜斌, 刘露, 刘霞()   

  1. 昌吉溢达纺织有限公司,新疆昌吉 831100
  • 收稿日期:2022-04-15 修回日期:2022-08-15 出版日期:2023-02-25 发布日期:2023-02-22
  • 通讯作者: 刘霞,女,1972年出生,新疆库尔勒人,副研究员,硕士,研究方向:棉花育种。通信地址:830054 新疆乌鲁木齐市银川路966号,Tel:0991-4310828,E-mail:Liuxiaxj@esquel.com
  • 作者简介:

    白玉林,男,1980年出生,青海民和人,高级农艺师,硕士,研究方向:棉花育种及栽培管理。通信地址:830054 新疆乌鲁木齐市银川路966号,Tel:0991-4310828,E-mail:

  • 基金资助:
    新疆维吾尔自治区科技厅重大科技专项“机采棉新品种培育及技术示范”(2021A02001-4)

The Response of Sea-island Cotton Strains to the Spraying Time and Frequency of Defoliants

BAI Yulin(), WANG Chengqiang, DU Bin, LIU Lu, LIU Xia()   

  1. Changji Esquel Textile Co., Ltd., Changji, Xinjiang 831100
  • Received:2022-04-15 Revised:2022-08-15 Online:2023-02-25 Published:2023-02-22

摘要:

为明确脱叶剂喷施时间、频次对不同海岛棉品系脱叶、吐絮、产量性状及纤维品质的影响,以品系ZX102和ZX113为试验材料,采用三因素完全随机试验,设置3个喷施时间,2种喷施频次,分析不同海岛棉品系对不同处理的响应。结果表明:使用脱叶剂能明显提高脱叶率,吐絮率为40%和50%下两品系药后15 d左右时脱叶率已达90%且显著高于清水对照(P<0.05);吐絮率40%和50%下使用脱叶剂使两品系马克隆值、上半部平均长度、比强度有所降低,表现为:CK>T2>T1,其中40%时T1处理的马克隆值显著低于CK(P<0.05),不同处理下两品系铃重和籽指表现为:CK>T2>T1,其中40%时T1处理的铃重显著低于CK(P<0.05)。在海岛棉机械采收实践中,为保证产量和纤维品质,当田间吐絮率50%时可采用T2喷施方式来实现。

关键词: 海岛棉, 脱叶剂, 喷施时间, 施药频次, 纤维品质, 产量

Abstract:

In order to clarify the effects of spraying time and frequency of defoliants on leaf abscission, boll opening, yield traits and fiber quality of different sea-island cotton strains, ZX102 and ZX113 were used as test materials and 3 spraying times and 2 spraying frequencies were set. Three-factor completely randomized experiments were used to analyze the responses of different sea-island cotton strains to different treatments. The result showed that the use of defoliants significantly improved the defoliation rate, and the defoliation rate of the two strains at 40% and 50% boll opening rate reached 90% about 15 days after using defoliants, and they were significantly higher than that of the water control (P<0.05). The use of defoliants at 40% and 50% boll opening rate reduced the macron value, fibre length and fibre strength of the two strains, which were manifested as CK>T2>T1; at 40% boll opening rate, the macron value under T1 treatment was significantly lower than that under CK (P<0.05). The boll weight and seed value of the two strains under different treatments were CK>T2>T1, and the boll weight at 40% boll opening rate under T1 treatment was significantly lower than that under CK (P<0.05). In order to ensure the yield and fiber quality, T2 spraying can be used at 50% boll opening rate for mechanical harvesting of sea-island cotton.

Key words: sea-island cotton, defoliant, spraying time, spraying frequency, fiber quality, yield