论文部分内容阅读
总结了水利部“948”计划项目“宁夏银北灌区暗管排水关键技术引进”近两年来的执行情况,以及美国T555型开沟铺管机引进的必要性和该机器于银北灌区在暗管排水技术示范推广中所起的关键作用.结合银北灌区的实际和本项目推广示范的要求,在银北惠农县团结村建立了200hm2左右的示范区,并按不同暗管布局将该示范区分割成5个试验区,在每个试验区内连续观测农田地下水位动态变化、土壤含水量和含盐量等.在分析现场观测资料的基础上,对不同埋深和间距的暗管布局,在防渍、防盐效果方面作了初步比较,并对暗管排水的增产效果及其经济效益也作了分析.所取得的试验数据和成果对示范区今后现场观测及暗管排水技术的全面推广都具有重要的参考价值.
Summed up the “948” project of the Ministry of Water Resources “the key technologies of underground pipe drainage in Yinbei Irrigation District in Ningxia” implementation in the past two years, and the necessity of introducing the T555 trenching pipelaying machine in the United States and the necessity of introducing the machine in Yinbei Irrigation Area Pipe drainage technology demonstration and promotion of the key role in combination with the Irrigation District of the actual and the project to promote the demonstration requirements of the project in the village of Huinong County unity to establish a 200hm2 demonstration zone, The demonstration area was divided into five experimental zones, and the dynamic changes of groundwater level, soil water content and salinity in farmland were continuously observed in each experimental zone.Based on the analysis of on-site observation data, Layout, in the anti-stain, anti-salt effect made a preliminary comparison, and the underground pipe drainage stimulation effect and its economic benefits have also been analyzed.Experimental data and results obtained on the demonstration area in the future field observation and underground pipe drainage technology The comprehensive promotion has important reference value.