A mathematic equation was established to model the leaching and transformation of pesticides in root zone and assess impact of pesticide on groundwater.
根据水动力学弥散理论建立农药在包气带中运移与转化过程的数学模型，评价农药使用对地下水环境的影响。
The results show that the zone in the zone has the characteristics of an evident humic property, intense leaching and acid reaction;
研究结果表明：此带土壤腐殖质特性明显，淋溶强烈，呈酸性；
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