Effects of Lanthanum and Cerium on Acid Phosphatase Activities in Two Soils  

作　　者：徐冬梅 刘广深 徐杰 刘维屏 

机构地区：[1]Environmental Science Institute, Zhejiang University, Hangzhou 310029, China

出　　处：《Journal of Rare Earths》2004年第5期725-728,共4页稀土学报（英文版）

基　　金：ProjectsupportedbyNationalKeyProjectofBasicResearch ( 2 0 0 2CB410 80 0 )

摘　　要：To evaluate the security of using thulium, comparision between effects of La and those of Ce on acidic phosphatase activities in red soil and yellow soil in Zhejiang district was studied under conditions of ambient temperature and humidity. Results show that the acid phosphatase from different soil respondes to La and Ce differently. The activity of acid phosphatase in soil 1 declines with the increase of the concentration of La and Ce. The maximum inhibitory ratio of La and Ce reaches 69.8% and 71.0% respectively. But La and Ce have stimulative effect on the activity of acid phosphatase in soil 2. Under the effect of same concentration of the thulium, the acid phosphatase in two soils increases with the extending of culture time.To evaluate the security of using thulium, comparision between effects of La and those of Ce on acidic phosphatase activities in red soil and yellow soil in Zhejiang district was studied under conditions of ambient temperature and humidity. Results show that the acid phosphatase from different soil respondes to La and Ce differently. The activity of acid phosphatase in soil 1 declines with the increase of the concentration of La and Ce. The maximum inhibitory ratio of La and Ce reaches 69.8% and 71.0% respectively. But La and Ce have stimulative effect on the activity of acid phosphatase in soil 2. Under the effect of same concentration of the thulium, the acid phosphatase in two soils increases with the extending of culture time.

关 键 词：PEDOLOGY LANTHANUM CERIUM soil acidic phosphatase rare earths 

分 类 号：S154[农业科学—土壤学]