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 levels both of amount and energy of soil water were remarkably raised by adoption of mulch with straw in seedling stage as well as in summer fallow time in some cases.
采用夏闲期并苗期秸秆覆盖,能有效提高耕层土壤水分的数量水平和能量水平;
Promotion of the knowledge to governors at various levels is the key to make perfect soil and water conservation.
提高各级领导的认识是搞好此项工作的关键因素。
Soil type and soil texture and land type affected the movement of water and salt in soil, thereby influenced soil salinization levels.
土壤类型、土壤质地和土地类型以不同的方式影响着土壤水盐运移,对土壤盐渍化水平有一定的指示作用。
The surface soil water content was close with different mineralization degree levels water, which approached saturated water content.
不同矿化度的水入渗后,土壤表层含水率基本相近,接近饱和含水率。
The effect of the rise of ground water level was simulated by increasing the mass density of pore water in the soil elements between the initial and targeted ground water levels.
通过逐步改变初始和终止地下水位间土单元中孔隙水的密度模拟地下水位上升的效应。
The results indicated that this clonal species is able to withstand soil-water heterogeneity through physiological integration, which is promoted under increasing levels of water contrast.
实验结果表明克隆植物东方草莓能通过分株间的克隆整合抵御土壤水分异质性,并且克隆整合随分株间土壤水分梯度的增大而增强。
The results indicated that this clonal species is able to withstand soil-water heterogeneity through physiological integration, which is promoted under increasing levels of water contrast.
实验结果表明克隆植物东方草莓能通过分株间的克隆整合抵御土壤水分异质性,并且克隆整合随分株间土壤水分梯度的增大而增强。
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