负压灌溉简述

Brief Introduction of Negative Pressure Irrigation

在农业水资源短缺的背景下,介绍了负压灌溉这一节水灌溉方式。简述了负压灌溉的原理,介绍了其早期的发展历史;然后根据负压灌溉的装置阐述了其应用于实践的设计思路,列举了现有的负压灌溉在农业领域的应用并将其与其他灌溉方式进行对比;最后对负压灌溉的研究进行了展望:研究廉价灌水器材料,加强灌水器田间布局方式的研究,深化系统时效性和耐久性的研究,结合无压灌溉建立复合式灌溉系统。

Negative pressure irrigation that was one of water-saving irrigation was introduced in the background of water shortage in agriculture. The mechanism of negative pressure irrigation was sketched and its history of development was introduced.Then the design ideas for applying it to practice were explained according to its devices and applications in agriculture were enumerated besides it was contrasted with other irrigation methods. Finally ,the future of negative pressure irrigation was looked：developing cheap emitter, enhancing the research of emitters＇ layout, researching the timeliness and durability in-depth, establishing compound system combining it with non-pressure irrigation.