The evaluation of the safe yield of ground water must be based on that the disaster ground subsidence don't take place. The control of ground subsidence is the control of disaster ground subsidence.
地面沉降条件下的地下水允许开采量评价必须以灾害性地面沉降不发生为前提，地面沉降的控制应是控制灾害性地面沉降。
The egg mass rate, megalopa yield, growing rate and the survival rate of the young Chinese mitten crab are promoted significantly while proper ratio ground water is applied to the cultivation.
通过适量地下水在育苗中的使用，使蟹苗在抱卵率、大眼幼体产量、生长速度及成活率等技术指标上有明显提高，这对中华绒螯蟹育苗研究和指导养殖有重要意义。
Compared with submerged irrigation, the growth of root, accumulation of above-ground dry matter, grain yield and water use efficiency were decreased significantly under dry cultivation.
旱种抑制水稻根系生长和地上部干物质积累，产量和水分利用率比淹水灌溉显著降低。
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