2) surface and subsurface waterlogging
A Study on the drainage index for combined control of surface and subsurface waterlogging;
The author regards, after reviewed on the spot, that the true reason of Loulan s disappearance probably is not the drought like other ancient cities in Xinjiang but the waterlogging.
作者经实地考察后认为 :楼兰古城的消亡原因可能不同于新疆的其它古城 ,是先涝后枯 ,即毁于水涝。
The pot-cultured tobacco plants with 9-leaf were tested under waterlogging,low temperature,waterlogging + low temperature condition and the relative conductivity,MDA,protein and soluble sugar content,POD and SOD activity,its biomass and growth situation were determinated after 7 days from its recovery growth.
结果表明,低温、水涝以及低温或水涝的交叉处理均严重影响烟草的各项生理生化指标和生长发育,各处理对烟草的伤害程度依次为淹水2 d后再0℃低温处理2 d>0℃低温处理2 d后再淹水2 d>淹水2 d>0℃低温处理2 d。
4) flood and water-logging
5) draining waterlogging
6) waterlogging water pumping and drainage
In the light of the waterlogging forming reasons in the built area and combined with the areal drainage conditions, the planning is considered to adopt the principle of high water level and high-speed drainage, low water level and low-speed drainage, and waterlogging water pumping and drainage for prevention.