摘要
Abstract
To enhance the safe utilization efficiency of contaminated farmland and progressively strengthen the assurance of soil quality and agricultural product safety.The research selected rape-seed,cucumber,loofah,tomato,and rice as experimental subjects and conducted comprehensive ag-ricultural planting experiments.The experimental showed that rapeseed,1.Rapeseed,cucumber,loo-fah,and tomato were classified as low-risk crops that exhibited relatively low levels of mercury accu-mulation.Even when cultivated in mercury-contaminated soil,the edible safety of these crops could still be reliably assured.In contrast,rice demonstrated a higher risk for mercury accumulation,it showed significantly elevated mercury content compared to other tested crops.This indicated that cul-tivating rice on mercury-contaminated land necessitates heightened caution.Among the 11 rice varie-ties evaluated in this study,notable differences in total mercury content were observed.Jingliangyou-huazhan was identified as having the lowest total mercury content and was categorized as a low-mercu-ry-accumulating variety.The application of root barrier technology revealed that the soil conditioner had a pronounced effect on reducing mercury levels in rice.Furthermore,implementing foliar control technology effectively inhibited both transfer and enrichment of mercury within rice plants.When combining soil conditioner with foliar control agent for managing rice cultivation under contaminated conditions,we achieved a significant reduction in plant mercury content,the lowest recorded level,demonstrating optimal effectiveness.The comprehensive implementation of low-mercury-accumulating plant varieties,in conjunction with root and foliar management technologies,is not only highly prac-tical and efficient but also possesses significant potential for widespread adoption.关键词
汞污染/水稻/土壤综合调理/叶面阻控Key words
mercury pollution/rice/soil comprehensive conditioning/foliar inhibitors分类
资源环境
