乌克兰水利技术及土壤改良研究所排水部研究证实,采用无坡降及小坡降排水设施是合理的。运用无坡降排水设施代替传统的有一定坡降的排水设施,保证沟网控制地段面积增加,节省调节、运用渠道的建设费用。在整个面 The drainage department of the Ukrainian Institute of Hydraulic Technology and Soil Improvement proved that it is reasonable to adopt non-descending and downslope drainage facilities. The use of non-sloping descending drainage facilities instead of the traditional drainage facilities have a certain gradient, to ensure that ditch control area increase, save the adjustment, the use of channel construction costs. In the whole face