Locust eggs depend on soil moisture for their development, and both low and high rainfall can benefit them, as receding water levels and formerly flooded areas provide moist soil.
蝗虫的卵依赖潮湿的泥土来发育，较少的和较多的降雨都会有益于它们生长，因为水位下降和曾经发过洪水的地方都有潮湿的泥土。
For example, cheap forms of irrigation have depleted the water table in many farm areas of India, while at the same time adding near-toxic levels of salts from fertilizers to the soil.
例如成本低廉的灌溉方式已经使印度很多地区的地下水干涸，化肥中高剂量的盐分残留在土壤内。
However, when precipitation rate is large enough and soil water goes beyond the field capacity, the excessive soil water will flow laterally to the lower levels through noncapillary pores.
而当降水强度较大，以致使土壤水分大于田间持水量时，超过田间持水量部分的土壤水会很快流往较低的台阶。
The volunteers placed the plants about five centimeters into the soil to prevent rising and falling water levels from pulling them out.
VOA: special.2009.10.06
Engineers have found that wetlands, grassy fields and soil or sand filters can take in stormwater with different levels of pollution and release water with a relatively constant cleanliness.
VOA: standard.2010.08.04
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