干旱区研究 ›› 2016, Vol. 33 ›› Issue (3): 534-539.doi: 10.13866/j.azr.2016.03.12

• 植物及植物生理 • 上一篇    下一篇

不同施氮量滴灌棉田棉花蕾期脱落酸(ABA)与气孔导度之间的响应关系

张建新1, 马英杰2, 何江勇1   

  1. 1.新疆农垦科学院农田水利与土壤肥料研究所,新疆 石河子 832000;
    2.中国科学院新疆生态与地理研究所,新疆 乌鲁木齐 830011
  • 收稿日期:2015-07-03 修回日期:2016-02-01 出版日期:2016-05-15 发布日期:2016-05-31
  • 作者简介:张建新(1962-),男,副研究员,研究向方为农业节水、植物营养和盐碱土改良及利用. E-mail: zhangjx0993@sina.com
  • 基金资助:
    国家国际科技合作专项“基于ABA信号的滴灌棉花水肥调控技术合作研究”(2011DFA32800)项目资助

Response Relationship between ABA Content and Stomatal Conductance of Cotton Plant at Bud Stage under Nitrogen Application and Drip Irrigation

ZHANG Jian-xin1, MA Ying-jie2, HE Jiang-yong1   

  1. 1. Institute of Irrigation and Water Conservancy,Soil and Fertilizer Research,Xinjiang Academy of Agricultural and Reclamation Sciences,Shihezi 832000,Xinjiang,China;
    2. Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,Xinjiang,China
  • Received:2015-07-03 Revised:2016-02-01 Published:2016-05-15 Online:2016-05-31

摘要: 利用滴灌盆栽试验,研究棉花蕾期不同施N水平条件下,脱落酸(ABA)含量与气孔导度之间的响应特征。结果表明:在蕾期,盆栽滴灌棉花不同处理纯N分别为2 g·盆-1(N2)、4 g·盆-1(N4)、6 g·盆-1(N6)的条件下,ABA含量与气孔导度之间呈正相关关系,相关性系数(r)的分别为0.905、0.942、0.958,T检验显著水平P分别为0.034、0.016、0.010;2 g·盆-1、4 g·盆-1和6 g·盆-1的模型分别为二次函数、指数函数和指数函数,模型拟合决定系数(R2)分别为0.975、0.894、0.946,F检验P分别为0.025、0.015、0.005,达到显著水平和极显著水平。回归模型较好地描述了滴灌棉花蕾期ABA与气孔导度之间相关性及其不同施N水平的模型特征。

关键词: 滴灌, 施氮量, 棉花, 气孔导度, 脱落酸(ABA), 蕾期

Abstract: Drip-irrigation pot experiment was used to study the response relationship between ABA content and stomatal conductance of cotton plant at bud stage under nitrogen application and drip irrigation. The results showed that,at the bud stage,there was a positive correlation between ABA content and stomatal conductance of potted cotton plant under drip irrigation and different N treatments,i.e. the 2 g ,4 g and 6 g·pot-1; the correlation coefficients (r) were 0.905,0.942 and 0.958,and the T-test significance levels were 0.034,0.016 and 0.010,respectively. The models with 2 g·pot-1,4 g·pot-1 and 6 g·pot-1 were quadratic,exponential and exponential functions respectively,and the determination coefficients (R2) in model fitting were 0.975,0.894 and 0.946 respectively. The F-test significance levels were 0.025,0.015 and 0.005 respectively,reaching the significant level and extremely significant level. Therefore,the regression model studied in this paper was used to well describe the correlation between the ABA cotton and the stomatal conductance of cotton plant under drip irrigation and also the model characteristics at different N-fertilization levels.

Key words: drip irrigation, nitrogen, cotton plant, stomatal conductance, ABA, bud stage