无源控制节水灌溉装置研究进展  

Advances in Passive Control of Water Saving Irrigation Valve

作　　者：杜珂[1] 袁湘月[1] 姜晨龙[1] 

机构地区：[1]北京林业大学工学院,北京100083

出　　处：《湖南农业科学》2011年第12期136-138,共3页Hunan Agricultural Sciences

基　　金：中央高校基本科研业务费专项(YX2011-6)

摘　　要：水资源短缺已成为世界各国亟待解决的问题,节水灌溉设备直接影响农业节水效率。无源自控节水灌溉技术是利用湿敏材料的吸水膨胀失水收缩的特点,达到自动控制的目的。该技术从最初的张力计发展到现在的自适应试节水阀,通过对这些设备原理的分析,总结出其优缺点,明确以后的改进方向。The shortage of water resources has become the question that the world urgently awaits to be solved. Each country is developing the water-saving irrigation technology. The passive control of water-saving irrigation technology achieve the purpose of automatic control by using the character of humidity-sensitive material that swelling when watered and shrinking when dried out. The technology is developed from tensiometer to the auto-adapted water saving valve. Through studying the mechanism of these equipments, their advantages and disadvantages were summed up to find a clear direction for future improvement.

关 键 词：节水灌溉 湿敏材料 节水阀 综述 

分 类 号：S275.5[农业科学—农业水土工程]