低丘红壤区重金属污染退化红壤改良的生物效应研究  

Studies on Biological Effects of Reformative Red Soils Degenerated from Heavy Metal Pollution

作　　者：孙华[1] 张桃林[2] 孔志明[1] 

机构地区：[1]南京大学环境学院,江苏南京210093 [2]中国科学院南京土壤研究所,江苏南京210008

出　　处：《水土保持学报》2004年第2期17-20,共4页Journal of Soil and Water Conservation

基　　金：国家重点基础研究发展项目(G1999011801)

摘　　要：通过对江西省贵溪市典型重金属污染退化红壤(菜园土)进行盆栽试验显示,施用石灰,特别是施用高量石灰,将土壤pH值调至微碱性,可以显著提高植物的净光合速率,增加土壤微生物量C(其中又以纤维分解菌的变化最为显著);降低土壤有效态重金属的含量,减轻重金属对植物的危害,是现有条件下切实可行的改良措施。Pot experiment on red soil(garden soil) contaminated by heavy metal in Guixi city,Jiangxi province was conducted.The results indicated that using lime to tune soil pH to lightly alkalescence could improve net photosynthesis significantly,increase soil microbe C (especially for cellulose-decomposing bacterium),reduce the available content of heavy metal and reduce the harm to plants,so it's the viable amended measurment under the condition in existence.

关 键 词：低丘红壤区 重金属污染 红壤改良 生物效应 

分 类 号：X503.23[环境科学与工程—环境工程]