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控制性分根交替灌水对作物水分利用率的影响及节水效应 预览 被引量:58

Effect on Water Use Efficiency and Water saving by Controlled Root divided Alternative Irrigation
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摘要 控制性分根交替灌溉(controledroots-dividedalternativeirigation,CRAI)是康绍忠提出的一种农田节水调控思路,其基本概念与传统灌水方式有着根本的不同。传统的灌水方法,追求田间作物根系层的充分和均匀湿润,CRA... The experiment of controlled roots divided alternative irrigation (CRAI) in maize showed that controlled 1/2 root region alternative irrigation could save 34.4%~ 36.8% water,and the biomass only decreased 6.2%~12%, when the lower water retention limit was 55%~65%. The difference of leaf area,leaf amount and water content were not significant between 1/2 CRAI and control.Water use efficiency of 1/2 CRAI was higher than that of 1/2 root divided continuous irrigation.Weight of dry root,root shoot ratio and basal diameter of stem increased and root was distributed evenly by alternative irrigation,but 1/2 root divided continuous irrigation did not have such effect.It is concluded that CARI is the practicable technology of water saving.
作者 梁宗锁 张建华 Liang Zongsou 1 Kang Shaozhong 1 Zhang Jianhua 2 Gao Junfeng[WT〗 ( 1Northwestern Agricultural University,Yangling,Shaanxi 712100; 2Department of Biology,Hong Kong Baptist University, Kowloon Tong,Hong Kong)
出处 《中国农业科学》 CAS CSCD 北大核心 1998年第5期 88-90,共3页 Scientia Agricultura Sinica
基金 国家自然科学基金,霍英东基金
关键词 控制性 分根交替灌溉 水分利用效率 节水效应 Controlled root divided alternative irrigation Water use efficiency Water saving effect
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