当前,灌溉建设得到大力地发展,无论是灌溉面积,还是灌溉技术,都发生了变化。如用混凝土衬砌渠岸和渠底,或者采用管道。这样就防止了水分的大量损耗和渗漏,并减少了土壤的再生盐溃化发生,同时也使地下干道网的建设简单化了。在这种情况下,林带的 At present, irrigation construction has been vigorously developed, irrespective of irrigated area or irrigation technology, have changed. Such as concrete lining canal bank and canal bottom, or the use of pipelines. This prevents a lot of water loss and leakage, and reduce the occurrence of soil reclamation of salt, but also make the construction of underground road network simplistic. In this case, the forest belt