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《Journal of Sichuan Agricultural University》 2009-02
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Study on Compound Pollution Effects of Pb~(2+),Cd~(2+) and Ni~(2+) on Tea Plant

FENG De-jian1,TANG Qian1,YE Shan-rong2,CHENG Neng-wu2,ZHANG Shu-ming2,TAN He-ping2(1.College of Horticulture,Sichuan Agricultural University,Yaan 625014,Sichuan,China;2.National Institute of Measurement and Testing Technology,Chengdu 610021,China)  
The growth of tea plant in the compound pollution of Pb2+, Cd2+ and Ni2+ as well as the absorption and accumulation of Pb2+,Cd2+,Ni2+ in tea plant were studied with Hogland solution culture.The results showed that,under the conditions of compound pollution,the tea plants withered with losing water,the middle and lower parts of tea plant leaves abnormally shed and displayed etiolation.The distribution and accumulation rules of heavy metals in different parts of tea plant were different.The order of Pb was absorbing rootsmain rootsstemstressleavestea flush,that of Cd is main roots or absorbing rootsstemstressleavestea flush,and that of Ni is main roots or absorbing rootsstemstea flushtress or leaves.The transfer abilities of Ni2+,Cd2+ in tea plant were much stronger than that of Pb2+.Under the conditions of compound pollution,the accumulation of one kind of heavy metal in tea plant was not only affected by the element itself but also by its environmental concentration,the nature of coesistent elements and their environmental concentration.For different parts,the effect orders and results of coesistent elements were different.
【Fund】: 四川省科技攻关项目(2006G11-003)
【CateGory Index】: S571.1
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