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.
研究區內地表水躰的水質主要受控於鑛坑排水的質量，區內主要河流、水庫已被汙染。
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.
以明溝排水爲對照，論述了內陸乾旱重鹽堿區暗琯排水在排水排鹽、控制地下水位、提高土壤脫鹽傚果及提高作物産量等方麪的優越性。
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.
採用具有獨立排灌系統的田間試騐研究了水稻田麪水氮素的動態特征、模式表征及田間排水氮素流失。