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中文摘要：
研究了陕西渭北旱塬长龄果园土壤基本性质和土壤中的重金属含量，并对土壤环境质量进行了评价。结果表明：渭北旱塬长龄果园土壤为壤土，土壤容重为1．23-1．54g／cm^3，含水量为15．71～19．20％，pH值为7．87—8．53，有机质为1．01～2．23％，CaCO3含量为39．26～149．79g／kg，土壤基本性质特征符合苹果生长土壤环境要求。重金属砷含量范围为15.2～12．7mg／kg，铬为80．1～71．4mg／kg，铜为48．8～22．7mg／kg，铅为34．5—18．4mg／kg，镍为34．0～30．6mg／kg，锌为381．8～56．7mg／kg；长龄果园采样土壤所有环境控制指标的单项污染指数都小于1，综合污染指数小于0．7，土壤环境质量判定为清洁。
英文摘要：
This Properties Studied the soil properties and heavy metal contents of old artificial orchard in shaanxi Weibei dry-land, and evaluated the soil environment quality.The results showed that all the soil samples collected from Weibei dry-land old artificial orchard were of loamy soil with the bulk density being 1.23-1.54g/cm^3,the water content being 15.71-19.20 %, the pH value being 7.87- 8.53, the content of organic matter being 1.01- 2.23%, the content of CaCO3 being 39.26-149.79g/kg.It totally meets the requirements of green apple production. The contents of As, Cr, Cu, Pb, Ni and Zn were 15.2- 12.7mg/kg,80.1-71.4 mg/kg,48.8- 22.7 mg/kg, 34.5-18.4 mg/kg,34.0-30.6 mg/kg,381.8-56.7 mg/kg respectively;The single-factor indices of all soil samples were below 1, the synthetic pollution indices of soil heavy metals were below 0.7, the soil environment quality of old artificial orchard in weibei dry-land was good, reaching the＂clean＂levels.
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