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今年上半年持续高温少雨致云南广西贵州四川重庆五省区市旱情加剧。其中云南广西部分地区旱情已达特大干旱等级,贵州秋冬连旱,出现百年一遇重旱,本文介绍了几种节水灌溉技术抵御旱情。但是地面灌溉目前仍是世界上特别是发展中国家广泛采用的一种灌水方法,约占全世界中灌溉面积的90%以上。我国有98%以上的灌溉面积依然采用传统的地面灌溉技术。
The first half of this year continued high temperature in Yunnan Province, Guangxi, Guizhou, Sichuan and Chongqing provinces and five cities in the drought intensified. Among them, the drought in parts of Guangxi and Guangxi provinces has reached the level of major drought. In autumn and winter in Guizhou, there is even a severe drought in one hundred years. This paper introduces several water-saving irrigation techniques to combat the drought. However, surface irrigation is still a widely used irrigation method in the world, especially in developing countries, accounting for more than 90% of the irrigated area in the world. Over 98% of China’s irrigated area still uses traditional surface irrigation technology.