农业环境科学学报2016，Vol.35Issue(3)：425-431,7.DOI:10.11654/jaes.2016.03.003
液体有机肥对铅、镉污染下马铃薯重金属吸收及干物质积累的研究
Effects of liquid organic fertilizer on absorption of lead and cadmium and dry matter accumulation in different organs of potato
摘要
Abstract
Controlling heavy metal pollution that is a potential threat to crop growth in soil has been a hot topic. In this study, the effects of liquid organic fertilizer on the absorption of lead and cadmium in different organs of potato and on plant growth were investigated in pot ex-periment. Under liquid organic fertilizer as basal fertilizer, there are significant differences in the absorption of lead and cadmium in differ-ent organs of potato. In lead and lead/cadmium pollution, lead and cadmium accumulation by different parts of potato was roots>leaves>stems>tubers, whereas lead and cadmium accumulation was roots>stems>leaves>tubers in cadmium pollution. The root/shoot ratio, the accu-mulation of dry matter and the yield of single potato plant were the maximum at the highest organic fertilizer rate. Applying liquid organic fertilizer decreased lead and cadmium uptake in potato tubers by 34.7%and 52.1%, respectively, as compared to the control. Lead concen-trations in potato tubers did not exceed the standard under lead pollution. However, cadmium concentrations in the tubers exceeded the standard during tuber expansion period though tuber cadmium in some treatments fell below the standard at the mature stage. The present experimental results show that liquid organic fertilizer can reduce the content of lead and cadmium in potato, and that harvesting potato ear-lier might reduce cadmium uptake by potato tubers.关键词
液体有机肥/Pb/Cd污染/马铃薯/缓解效应Key words
liquid organic fertilizer/lead and cadmium pollution/potato/mitigation effect分类
资源环境引用本文复制引用
王沛裴,郑顺林,何彩莲,张琴,万年鑫,罗艳琴,袁继超..液体有机肥对铅、镉污染下马铃薯重金属吸收及干物质积累的研究[J].农业环境科学学报,2016,35(3):425-431,7.基金项目
国家科技支撑计划（2012BAD06B0407）；国家现代农业产业技术体系（马铃薯）建设专项（编号CARS-P20）；四川省育种攻关配套项目 （）
