首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Effects of Limited Irrigation on Accumulation and Distribution of Dry Matter,Yield, and Water Use Efficiency of Different Cotton Varieties
Authors:Liu Pengcheng  Sun Hongchun  Liu Liantao  Zhang Yongjiang  Liu Yuchun  Bai Zhiying  Li Meng  Li Cundong
Institution:1. Agricultural University of Hebei /Hebei Key Laboratory of Crop Growth Regulation, Baoding, Hebei 071000, China; 2. College of Urban and Rural Construction, Hebei Agricultural University, Baoding, Hebei 071000, China; 3. College of Life Science, Hebei Agricultural University, Baoding, Hebei 071000, China; 4. Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051,China
Abstract:Objective]We aimed to prove the effects of limited irrigation on the regulation of soil moisture, growth, and yield in different mature cotton varieties in the Yellow River region. Method] Using the early maturing cotton variety CCRI 50, earlier middle maturing variety Nongdamian 601 (ND 601), and medium maturing variety Jimian 958 (JM 958) as test materials, field tests were carried out using both conventional irrigation (W1) and limited irrigation (proper irrigation before sowing, no irrigation during growing period; W2). The traits of interest were measured, including leaf area index, water use efficiency, and yield. Result] The dry matter quality of the three varieties was significantly lower with the W2 treatment, with the greatest reduction observed in CCRI 50 (P<0.05). Compared with the W1 treatment, the yield of the three varieties under the W2 treatment decreased significantly, with the greatest reduction observed in the early maturing variety CCRI 50. The water use efficiency of CCRI 50 decreased significantly while that of ND 601 and JM 958 improved significantly during the two study years. Conclusion] ND 601 and JM 958 have good adaptability to moderate drought stress and W2 treatment can improve the water use efficiency of these varieties to obtain the ideal output level. CCRI 50 is sensitive to moisture; it is difficult to form a high yield population for this variety under W2 treatment.
Keywords:cotton  limited irrigation  yield  water use efficiency  
点击此处可从《棉花学报》浏览原始摘要信息
点击此处可从《棉花学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号