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Position: Home > Articles > Influences of Application of Sludge on Yield of Brassica chinensis and Accumulation of Heavy Metal Cadmium and Chromium Journal of Henan Agricultural Sciences 2009,38 (10) 88-92

施用污泥对小青菜产量及重金属镉、铬积累的影响

作  者:
何轶飞;沈阿林
单  位:
河南农业大学资源与环境学院;河南省农业科学院植物营养与资源环境研究所
关键词:
小青菜;污泥;硝酸盐;重金属;食品安全
摘  要:
采用盆栽方式,以河南省具有代表性的新乡、开封、许昌、郑州四地污水处理厂的干化污泥作为有机肥种植小青菜,研究在连续4季分别施入不同来源和数量的污泥后小青菜的产量变化及重金属Cd、Cr在小青菜中的积累情况,并对采收的小青菜进行农产品安全评价。结果表明:施用污泥能提高小青菜产量,但长期大量施用污泥增加小青菜硝酸盐和Cd、Cr的含量,威胁食品安全。因此,研究制定科学的污泥施用限量,严格控制污泥土地利用的年限,十分必要。
译  名:
Influences of Application of Sludge on Yield of Brassica chinensis and Accumulation of Heavy Metal Cadmium and Chromium
作  者:
HE Yi-fei1,SHEN A-lin2 (1.College of Resources and Environment,Henan Agricultural University,Zhengzhou 450002,China;2.Institute of Plant Nutrition,Agricultural Resources and Environmental Science,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China)
关键词:
Brassica chinensis;Sludge;Nitrate;Heavy metal;Food security
摘  要:
Brassica chinensis was planted with the application of dried sludge from four typical sewage works of Xinxiang,Kaifeng,Xuchang,Zhengzhou in Henan province in pot experiment.The changes of yield and the accumulation of cadmium,chromium in Brassica chinensis were studied with application of sludge of different origin and quantity for 4 continuous seasons,and the security of Brassica chinensis was evaluated.The results showed that the application of sludge increased the yields of Brassica chinensis;But the application of sludge in long time and great quantity increased the accumulation of nitrate and heavy meatal cadmium,chromium,also harmed the food security.Therefore,it was essential to regulate the scientific maximum limit of application amounts of sludge,and strictly control the years of sludge application to soil.

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