soil combined pollution

基本解释

There are a number of elements accumulating in various types of industrial soil, showing a trend of combined pollution.
各类型企业土壤均存在多个元素累积，呈现出复合污染的趋势。
The results indicted that the soil Cmic and Nmic were decreased significantly with the treatments of combined pollution of lead and bensulfuron-methyl during the whole incubation period (180d).
铅与苄嘧磺隆除草剂复合污染在整个培养期间（180天）都对土壤中微生物量碳和氮的含量产生显著的抑制效应。
The average combined pollution index was 0.970, indicating that most of the soil samples were clean and that pollution of heavy metal for some areas was at the alert level.
雷州半岛土壤综合污染指数总平均为0.970，土壤总体上尚清洁，重金属污染处于警戒水平；