土壤2013，Vol.45Issue(3)：506-512,7.
有机物料对低积累水稻品种始穗期抗氧化酶活性和重金属积累的影响
Effects of Different Organic Amendments on Antioxidant Enzyme Activities and Heavy Metal Uptakes of a Low Grain Cd Accumulation Rice Cultivar at Initial Stage of Panicle Emerging
摘要
Abstract
A pot experiment was carried out to investigate the effects of three organic amendments (organic carbon material,rapeseed cake and pig manure) on antioxidant enzyme activities in roots,flag leaves and heavy metal uptakes of a low grain Cd accumulation rice cultivar at a heavy metal mixed contaminated paddy soil.The results showed that at initial stage of panicle emerging,application of higher rate mixed organic carbon material inhibited the growth of rice,and reduced antioxidant enzymes activities office roots.Application of rapeseed cake and pig manure significantly increased the biomass,and decreased Zn and Cd concentration in roots and straws.Application of rapeseed cake increased antioxidant enzyme activities of rice,and pig manure resulted in premature senility from initial stage of panicle emerging.As compared with the control,application of rapeseed cake increased biomass by 14.0％-49.2％,decreased melondialdehyde (MDA) content by 15.6％-31.3％ and 15.3％-51.8％ in roots and flag leaves,increased catalase (CAT) activity by 40.9％-79.8％ and 9.0％-143.8％,respectively.Concentrations of Zn in roots and straws decreased 19.1％-26.4％ and 10.1％-26.1％,Cd decreased 32.7％-58.8％ and 16.8-62.1％,respectively.Application of pig manure increased biomass by 10.8％-16.7％,increased MDA content by 53.1％-59.4％ and 18.5％-44.9％in roots and flag leaves.Concentrations of Zn in roots and straws decreased 29.7％-42.6％ and 15.2％-52.9％,Cd decreased 22.5％-44.0％ and 12.1％-64.5％,respectively.关键词
有机物料/水稻/抗氧化酶活性/重金属/土壤Key words
Organic amendments/ Oryza sativa L./ Antioxidant enzymes activity/ Heavy metal/ Soil分类
资源环境引用本文复制引用
周利强,吴龙华,骆永明,尹斌..有机物料对低积累水稻品种始穗期抗氧化酶活性和重金属积累的影响[J].土壤,2013,45(3):506-512,7.基金项目
国家自然科学基金项目(41071197,40821140539)和国家高技术研究发展计划项目(863)(2006AA10Z418)资助. （41071197,40821140539）
