摘要
甘肃沙区地处大陆腹地,气候干燥,降水稀少,水资源短缺,地下水位不断下降,固沙植被大面积衰亡,荒漠化蔓延速度加快,因而将高新节水灌溉技术引入防沙治沙显得十分必要。实践应用证明,应用滴灌、喷灌、渗灌等技术可在极端干旱地区建立有效的防沙治沙体系,能起到防风固沙,保护绿洲的重要作用。但是在应用中还存在一些问题,需要通过政府扩大投入、提高意识、完善制度体系和加强科学研究去解决。
It could effectively relax water crisis in arid area to extend new water-saving irrigation techniques that has distinct saving-water benefit. Because Gansu province locates in hinterland, its climate is arid, precipitation is infrequent, water resource is scarce, water table goes down, sand-fixing vegetation is degenerated and desertification is more serious, so it is very necessary to extend new water-saving irrigation techniques in desert control in Gansu. Experimentations prove that effective desert control system could be found in extremely arid area by new water-saving irrigation techniques. When new water-saving irrigation techniques were used, there are some questions to be solved by increasing funds, improving consciousness, perfecting several systems and enhancing experiments and researches.
出处
《甘肃林业科技》
2005年第1期8-12,共5页
Journal of Gansu Forestry Science and Technology
基金
国家"十五"科技攻关项目(2002BA517A09 01)
甘肃省自然基金项目资助。
关键词
节水灌溉技术
甘肃
固沙造林
植被恢复
生态功能
water-saving irrigation techniques
Gansu province
afforestation for fixing shifting sands
vegetation restoration
ecological function.
