In order to absorb water, the speed of root elongation in plants must surpass the speed of the humid soil layer moving down.
为了能够有效地从沙层中获得水分，植物的根系的伸长的速度必须大于湿沙层下降的速度。
Darker soils are often rich in iron and aluminum oxides, and are typical of highly weathered soil that forms in hot, humid climates.
而深色的土地通常是富含铁和氧化铝，是在湿热气候下形成的典型的高度风化的土壤。
The purplish soil of the warm and humid Sichuan Basin is green with crops in all four seasons, including paddy rice, rapeseed and sugarcane.
四川盆地多为紫色土壤，气候暖湿，农作物可四季生长，盛产水稻、油菜和甘蔗。
Due to the effect of water evaporation in dry climate, soil temperature at each point is lower than that of in humid climate.
干燥气候下，由于土壤水分的蒸发制冷作用，一天中土壤各点的温度低于湿润气候下相应各点的温度，土壤表层尤为明显。
The soil potassium fixation was increased after dry and humid alternation. Soil with higher potassium content had a higher fixation ability.
当土壤经过干湿以后，土壤会发生明显的固定钾作用，土壤含钾量越高，固定钾能力越强。
But because the cemetery thin soil layer, which really humid, so he did not really care.
但是因为这个墓地土层薄，里面湿气很重，所以他也没很在意。
This can be simply an area of damper soil, if the enclosure is large enough, or a humid hide-box or cave.
如果饲养环境足够大时，只需要增加一个比较潮湿的泥土区域，或一个潮湿的遮蔽处或洞穴。
By experiment, the strengthening effect and mechanism of several additives to the humid-plastic cement soil are studied.
通过实验，研究了几种外加剂对湿塑性水泥土的增强作用及其增强机理。
By experiment, the strengthening effect and mechanism of several additives to the humid-plastic cement soil are studied.
通过实验，研究了几种外加剂对湿塑性水泥土的增强作用及其增强机理。
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