【摘要】 黄河是沿岸许多地区农业生产的保证,但引黄灌溉必然涉及泥沙问题。借助于山东省西部引黄灌溉年限不一形成的天然试验场,通过土壤样品采集分析并与第二次土壤普查数据对比,分析了几年到几十年时间尺度上引黄灌溉对土壤物理性质的累积影响。结果表明,引黄灌溉引起了土壤容重的略微增加,孔隙度增加幅度小,出现土壤质地粘化趋势,细小泥沙颗粒入田促进了团聚体形成,但稳定性差。更多还原

【Abstract】 The Yellow River is very important for agriculture along the river,but the massive sediment can lead to eco-environmental problems.Within the natural experimental area formed by different irrigation years in the west of Shandong Province,the effect of irrigation from the Yellow River on the physical property of the topsoil was studied by comparing the physical property between the second general soil survey and soil samples taken in 2007.The results showed that,in the irrigated area by the lower Yellow River,the soil density was slightly increased,the soil porosity increased very little,the trend of soil texture clayification appeared,and the soil aggregation was promoted with weak stability.更多还原