【作者】 唐明灯； 艾绍英； 李盟军； 罗英健； 姚建武； 王艳红； 曾招兵； 余丹妮；

【Author】 TANG Ming-deng,AI Shao-ying,LI Meng-jun,LUO Ying-jian,YAO Jian-wu,WANG Yan-hong,ZENG Zhao-bing,YU Dan-ni(Institute of Soil and Fertilizer,Guangdong Academy of Agricultural Sciences,Guangdong Key Lab of Nutrient Cycling and Farmland Conservation,Guangzhou 510640,China)

【机构】 广东省农业科学院土壤肥料研究所广东省养分资源循环利用与耕地保育重点实验室；

【摘要】 为了比较不同有机物料及其用量对土壤Pb的钝化效果,选择有机肥、猪粪、牛粪、鸡粪和花生麸为材料,分别以0.5%、1%、2%、4%的用量施入重金属污染土壤,通过种植3茬生菜(Lactuca sativa L.)的盆栽试验研究有机物料对重金属污染土壤上生菜生长及其Pb含量的影响。结果表明,与对照相比,有机物料利于生菜生长,有提高生菜生物量的趋势。3茬生菜地上部Pb含量平均值的大小顺序为第3茬>第1茬>第2茬,且不同茬别之间有显著差异。对每茬生菜而言,生菜地上部Pb含量变异较小,处理的平均值至多高于对照86%或低于对照29%,土壤DTPA-Pb含量变异更小。因此,供试有机物料对生菜地上部Pb含量的影响较小。更多还原

【Abstract】 Three rounds of pot experiment were conducted to investigate the effect of five organic materials(manure,pig shit,cattle shit,hen shit,earthnut residue,and their application of 0.5%,1%,2%,4% per kg soil,respectively) on the growth and Pb concentrations of Lactuca sativa.The results showed that compared with the control,organic materials were good for the growth of L.sativa and increased the biomass of L.sativa.There was markedly difference for aboveground Pb concentration of L.sativa among 3 crops(crop 3 > crop 1 > crop 2),but for the same crop,the range of aboveground Pb concentration of L.sativa was small(86% increase or 29% decrease than aboveground Pb mean of CK for 3 crops),and the range of soil DTPA-Pb concentration was small,too.Therefore,it is difficult for these organic materials to affect largely the aboveground Pb concentration of L.sativa.更多还原