镧对太湖地区水稻土若干水解酶活性的影响  

Effects of Lanthanum on Hydrolytic Enzymes Activities of Paddy Soil in Tai Lake District

作　　者：褚海燕[1] 朱建国[1] 谢祖彬[1] 曹志洪[1] 曾青[1] 林先贵[1] 

机构地区：[1]中国科学院南京土壤研究所土壤圈物质循环开放研究实验室,江苏南京210008

出　　处：《稀土》2002年第3期41-43,共3页Chinese Rare Earths

基　　金：国家自然科学基金重大资助项目 ( 2 9890 2 82 )

摘　　要：通过模拟试验研究了镧对太湖地区水稻土酸性磷酸酶、脲酶及蔗糖酶活性的影响。镧对水稻土酸性磷酸酶活性表现出抑制作用 ,当镧浓度大于 6 0 mg/kg时 ,抑制作用达到显著水平 ,最大抑制率达到 13%;镧对水稻土脲酶活性影响不显著 ;镧对水稻土蔗糖酶活性表现出一定的刺激作用 ,当镧浓度为 30 0 mg/kg时 ,刺激作用达到显著水平 ,最大刺激率为 10 %。The effects of Lanthanum (La) on the activities of acid phosphatase, urease and sucrase of paddy soil in Tai Lake district were studied through simulation experiment. La inhibited acid phosphatase activity of paddy soil, and there was a significant inhibition (p<0.05) when La concentration was over 60 mg/kg,and the maximum inhibition rate was 13%. La had no significant effect on urease activity of paddy soil. La stimulated sucrase activity of paddy soil, and there was significant stimulation (p<0.05) at 300 mg/kg, and the maximum stimulation rate was 10%.

关 键 词：太湖地区 酶活性 稀土 镧 水稻土 水解酶 微量元素肥料 

分 类 号：S51[农业科学—作物学] S154.2