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一、引言我国具有广大的水稻种植面积,长江流域分布更为广大,几乎在所有水稻种植面积上,都存在排水问题。随着地区的位置、自然特点及土地经营方式的不同也有着不同的排水要求。排水水源的种类可分为地面水及地下水二种。
I. INTRODUCTION China has a vast rice planted area. The distribution of the Yangtze River valley is more extensive. There are drainage problems in almost all of the rice acreage. With the location of the region, the natural characteristics and different modes of land management also have different drainage requirements. Drainage types of water can be divided into two kinds of surface water and groundwater.