镉铅超标农田养蚕试验分析

湖南耕地镉铅等重金属污染比较严重,研究有效治理耕地重金属污染方式和替代产业调整模式,已成为湖南省农业可持续发展和生态系统安全的关键。该项实验在岳阳市某工矿区选择典型的镉铅超标农田栽桑养蚕,桑树生长发育良好。结果表明,通过镉铅超标农田养蚕的经济性状及效益比较,在工矿区镉铅超标农田以栽植农桑14号品种较好,密度为每667m2栽植1 000~2 000株;并证实了镉铅污染农田栽桑养蚕的可行性,为镉铅等重金属污染耕地安全、经济、高效生态利用和污染区产业结构调整进行了有益的探索。

Analysis of Sericulture Experiment in Farmland with Cd and Pb Content over Range

The heavy metal contamination such as cadmium（Cd） and plumbum（Pb） in arable land has become serious in Hunan; and it has been a key to sustainable development and eco-system security of Hunan agriculture to find an effective control pattern of heavy metal pollution and an alternative industry adjustment mode. This sericulture experiment was conducted in a typical farmland with Cd and Pb content over range, an industrial and mining district, Yueyang. The results show that the mulberry trees grow well, Nongsang 14 is a better mulberry variety, its optimum density is 1000~2000 plants per 667m2 in the contaminated farmland through the comparison of economic characters and benefit of sericulture therein; which has not only proved the feasibility of sericulture in the above farmland, but also practised useful exploration for safe, economical and eco-efficient utilization of the contaminated farmland, and industrial structure adjustment in heavy metal contaminated areas.