Comparison of Remediation Effects of Different Remediation Modes on Mildly Arsenic Contaminated Vegetable Farmland
In order to explore the restoration effect of different restoration modes on mildly arsenic-contaminated farmland,a field plot experiment will be conducted from June to November 2021 to study the restoration effect of mildly arsenic-contaminated farmland.Using in-situ passivation technology,agronomic control measures and deep ploughing,26 groups of different restoration techniques were used to plant radish,eggplant,cabbage and water spinach.The results showed that:Among the 26 restoration schemes,there were 5 optimal recommended restoration schemes,as follows:(1)The removal rate of arsenic content in crops in the foliar fertilizer+cabbage group was as high as 84.6%;(2)The removal rate of effective arsenic content in the soil of deep tillage+water spinach group was 94.6%;(3)The removal rate of arsenic content in leaf fertilizer+radish group was as high as 70.6%;(4)The removal rate of total arsenic content in soil of soil repair agent+foliar fertilizer+cabbage group was 23.2%;(5)The removal rate of effective arsenic content in the soil of chicken manure+water spinach group was 29.3%.The study shows that the single restoration mode is more suitable for the restoration of mildly arsenic contaminated farmland,which has the advantages of simple operation,low restoration cost and good restoration effect,and can also provide a demonstration model and technical scheme for large-scale restoration of mildly arsenic contaminated farmland.
NETL
NSTL
万方数据
