新疆农业科学 ›› 2019, Vol. 56 ›› Issue (1): 146-153.DOI: 10.6048/j.issn.1001-4330.2019.01.018

• 棉花化肥农药减施研究专刊 • 上一篇    下一篇

不同棉花品种对脱叶剂的响应

张大伟,魏鑫,徐海江,刘忠山,李春平,马清倩,徐建辉   

  1. 新疆农业科学院经济作物研究所,乌鲁木齐,830091
  • 出版日期:2019-01-20 发布日期:2019-01-20
  • 通信作者: 徐建辉(1959-),女,新疆吉木萨尔人,研究员,研究方向为棉花育种与栽培,(E-mail)xujianhui1959@126.com
  • 作者简介:张大伟(1980-),男,河南柘城人,副研究员,硕士,研究方向为棉花育种与栽培,(E-mail)zbzdw012@126.com
  • 基金资助:
    国家重点研发计划项目“棉花化肥农药减施技术集成研究与示范”(2017YFD0201904);自治区重点研发计划项目-优质高产机采棉新品种选育及高质量种子生产加工工艺技术研发(2016B01001-3)

Study on the Response of Cotton Varieties with Different Genotypes to Defoliants

ZHANG Da-wei, WEI Xin, XU Hai-jiang, LIU Zhong-shan, LI Chun-ping, MA Qing-qian, XU Jian-hui   

  1. Institute of Economic Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
  • Online:2019-01-20 Published:2019-01-20
  • Correspondence author: Xu Jian-hui ( 1959 - ),female, from Jimusaer, Xinjiang, researcher, postgraduate, research direction: cotton breeding and cultivation technology promotion; (E-mail)xujianhui1959@126.com.

摘要: 【目的】 研究不同棉花品种对脱叶剂响应,筛选出脱叶效果较好棉花品种。【方法】 选择脱叶效果较好的脱叶剂-脱吐隆,分析喷施前后棉花的光合作用和棉花叶片数、脱叶率、单株铃数、单铃重、单产、衣分、马克隆值、纤维长度等指标变化规律。【结果】 Pn角度分析,喷施脱叶剂5 d敏感的品种顺序为P1、P3、P10、P8;Ci角度分析喷施脱叶剂5 d敏感的品种顺序为P1、P10、P2、P3;P10与P3在前期脱叶速率较快,后期P1脱叶速率较快,且脱叶率最高;产量性状各指标(P2衣分、皮棉除外)均低于清水对照;脱叶剂喷施与清水对照的纤维品质各指标差异均不显著(P>0.05)。【结论】 P1、P3、P10品种对脱叶剂的响应较为迅速。

关键词: 棉花; 不同基因型; 脱叶剂; 响应

Abstract: 【Objective】 This project aims to study the response of cotton varieties with different genotypes to defoliants in order to select cotton varieties with better defoliation effect. 【Method】 Defoliation with better effect was selected to study the photosynthesis, the leaf number, defoliation rate, boll number per plant, boll weight per boll, yield per boll, lint percentage, micronaire value and fiber length of cotton before and after spraying. 【Result】 From Pn point of view, the order of varieties sensitive to defoliant application for 5 days was P1, P3, P10 and P8; from Ci point of view, the order of varieties sensitive to defoliant application for 5 days was P1, P10, P2 and P3; the rate of defoliation of P10 and P3 was faster in the early stage, but the rate of defoliation of P1 was faster in the later stage, and the rate of defoliation was the highest; the indexes of yield traits (except for P2 lint and lint cotton) were lower than those of others. There was no significant difference in fiber quality between fresh water control and defoliant spraying (P > 0.05). 【Conclusion】 Comparing photosynthesis and defoliation rate of the different cotton varieties, it was concluded that P1, P3 and P10 varieties responded quickly to defoliants.

Key words: cotton; different genotypes; defoliant; response

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

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