地面灌溉是古老的田间施水技术,但它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。我国则有98%以上的灌溉面积依然采用传统的地面灌溉技术。 Surface irrigation is an ancient field water technology, but it 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. In China, more than 98% of irrigated area still uses traditional surface irrigation technology.