| 膜下滴灌的土壤水分对棉花根长密度分布及产量的影响 |
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| 引用本文： | 闫映宇,盛钰,冯省利,李子良,贾宏涛,赵成义. 膜下滴灌的土壤水分对棉花根长密度分布及产量的影响[J]. 灌溉排水学报, 2008, 27(5): 45-47 |
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| 作者姓名： | 闫映宇 盛钰 冯省利 李子良 贾宏涛 赵成义 |
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| 作者单位： | [1]新疆农业大学,乌鲁木齐830052 [2]新疆生态与地理研究所,乌鲁木齐830011 [3]兵团农一师勘测设计院,新疆阿克苏843000 [4]乌鲁木齐市建委,乌鲁木齐830000 |
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| 基金项目： | 中国科学院知识创新工程项目，国家科技支撑计划，绿洲生态与荒漠环境重点实验室资助项目 |
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| 摘 要： | 通过膜下滴灌田间试验,研究了水分对棉花根长密度分布及产量的影响。结果表明:各灌水处理棉花根长密度空间分布总特征一致,水平方向,宽行与窄行的根长密度基本相同,但明显大于膜间;垂直方向,随土壤深度增大,棉花根长密度减小。但不同灌水处理间存在差异,过量灌水处理棉花膜间的根长密度增大,宽行与窄行的根长密度减小,随着灌水量的增加,棉花全根层平均根长密度增大;胁迫灌水处理深层土壤中根长密度增大。花铃期、吐絮期各土层棉花根长密度与产量呈显著的二次相关关系。灌溉量与棉花产量间的关系符合报酬递减规律,其回归方程为y=-0.0026x2+18.015x-24845(R2=0.959)。
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| 关 键 词： | 膜下滴灌 土壤水分 棉花 根长密度 |
Effects of Soil Moisture on the Distribution of Root Length Density and Yield of Cotton under Drip Irrigation |
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| YAN Ying-yu,SHENG Yu,FENG Sheng-li,LI Zi-liang,JIA Hong-tao,ZHAO Cheng-yi. Effects of Soil Moisture on the Distribution of Root Length Density and Yield of Cotton under Drip Irrigation[J]. Journal of Irrigation and Drainage, 2008, 27(5): 45-47 |
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| Authors: | YAN Ying-yu SHENG Yu FENG Sheng-li LI Zi-liang JIA Hong-tao ZHAO Cheng-yi |
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| Affiliation: | YAN Ying-yu1,SHENG Yu2,FENG Sheng-li3,LI Zi-liang4,JIA Hong-tao1,ZHAO Cheng-yi2 (1.College of Resource , Environmental Sciences,Xinjiang Agricultural University,Urumqi 830052,China,2.Xinjiang Institute of Ecology , Geography,Chinese Academy of Sciences,Urumqi 830011,3.The First Agricultural Division Investigation , Design Institute in Xinjiang,Aksu 843000,4.Committee of Urumqi Construction,Urumqi 830000,China) |
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| Abstract: | Effects of soil moisture on the distribution of root length density and yields of cotton were studied by field experiment under drip irrigation.The results indicate that spatial distribution characteristic of cotton root length density of all water treatments were basically consistent.Horizontally,the cotton root length densities are similar between wide and narrow rows,but are significant higher than bare land;vertically,root length density of cotton increased with soil deeps increased.But the distribution... |
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| Keywords: | drip irrigation under mulched soil moisture cotton root length density |
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