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The objective of this study was to evaluate nutrient loss under herbaceous cover in simulated field conditions and quantify the influences of the aerial and underground parts of plants in preventing nutrient loss. The experimental settings were as follows: two herbs, i.e., alfalfa (Medicago sativa L.) and green foxtail (Setariaviridis (L.) Beauv.); four covers for each herb (0, 20-30%, 50-60%, and...
Preferential flow is important for solute transport in soil. This study aims to investigate distribution characteristics of preferential flow paths in agricultural land and to determine the effects of preferential flow on nitrate nitrogen transport. Dye tracer experiments were conducted on two farmland plots in Changping County, Beijing. Two undisturbed soil columns (with preferential flow) and two...
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