surface water drainage

基本解释

In the study area, surface water quality is hanly controlled by the mining drainage, and the main river and reservoir have already been polluted.
研究区内地表水体的水质主要受控于矿坑排水的质量，区内主要河流、水库已被污染。
Subsurface pipe drainage in drought-prone region is superior to surface drainage in draining off water and salt, controlling ground water-level, and increasing crop output, etc.
以明沟排水为对照，论述了内陆干旱重盐碱区暗管排水在排水排盐、控制地下水位、提高土壤脱盐效果及提高作物产量等方面的优越性。
A field case study with independent irrigation system was conducted to elucidate the dynamic characteristics, modeling of nitrogen (N) in surface water of paddy field and N loss from drainage.
采用具有独立排灌系统的田间试验研究了水稻田面水氮素的动态特征、模式表征及田间排水氮素流失。