植物根系对土壤水分动态变化影响明显。
Root system of vegetation clearly influence the trends change of soil water.
以不覆盖的处理为对照，研究了冬小麦期覆盖秸秆对夏玉米土壤水分动态变化及产量的影响。
Taking bare surface as CK, this paper discussed effect of straw-mulch during wheat stage on soil water dynamic changes and yield of summer maize.
下部土壤含水率等值线分布由底部向上都呈递增趋势，表明本次试验土壤水分动态变化不受地下水位的影响。
The distributing trend of soil moisture contour map in under soil is rising up from bottom to surface, which indicates that ground water level has no influence on soil moisture variation.
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