西北荒漠灌区覆膜条件下苜蓿草地土壤理化性质的时空变化
吴芳, 李玉珠, 师尚礼, 张贞明, 高永勇

Temporal and spatial variation of soil physical properties in alfalfa grassland under film mulching in northwest desert irrigation region
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覆膜对0-20和20-40 cm处土壤水溶性盐的影响