塔里木河干流农田排水资源化研究

近几十年分析资料对比表明 ,农田排水对塔里木河干流水质盐化的影响不断加重。在塔里木河干流 ,农田排水资源化利用有如下几个有利条件 :( 1)农田排水有一定数量且渠网的延伸和改造难度不大 ;( 2 )荒漠可作为农田排水资源化利用的场所 ;( 3)农田排水仍可勉强适于耐盐植物生长。根据区域不同 ,利用农田排水拓展乔灌草防沙带、增加盐成土荒漠耐盐植被的盖度、使人工绿洲边缘的荒漠能够生长耐盐植物等都是农田排水资源化利用发展的方向

Utilization of Farmland Drainage as Resources in the Tarim River Valley

Analysis of the data accumulated in the past few decades indicates that drainage from farm fields has been steadily affecting the water quality of Tarim River, making it more salinized. In making use of the drainage as resources, there are several advantages:1) there already exist a certain number of drainage networks which are not very difficult to extend and remold:2) deserts can be used as object for drainage utilization;3) the drainage is still barely suitable for irrigation of salt tolerant plants. Based on different regions, the drainage can be used to expand sand control belts of arbors, shrubs and grasses, to increase vegetation coverage of Halosols deserts by salt tolerant plants, or to set up protective belts of salt tolerant plants around artificial oases.