To Facilitate the green tea Trade.

National Standard Determination of lead in food GB/T5009.12-199635 Yang Huifen, Zouzong Fu "Our monitoring of lead content in food." Focused on heavy metals (lead) on different varieties of tea and the impact of growth in different tea varieties in the roots, stems, leaves accumulate more, analysis of the main cumulative area and compare that to what varieties more resistant to lead in the environment lead to better growth.  The latter Xihu green tea can be kept for a longer time. In the experiment, selected varieties with low accumulation of lead in tea varieties, is able to promote the production and application of experimental and farmers need to fields and acceptance.
 3. one thousand Huizhong, He Ping, Zhao Nan, "lead on the lawn of plant biomass and chlorophyll levels of impact." Leaves of Grass Science, Vol 20 (6) a 20.No.6: 73 ~ 7528 complex by green, from Mu such as {Cd, Zn, Pb and their interaction on the impact of tobacco wheat "[J]. Then, the Xihu green tea leaves are flattened. Ecology, 1984,4 (3): 23l a 235.29 Jane Min Fei, bow Hillsborough, swim the sea, Pingya Ling, Yang Xuhui" aquatic plant for copper, lead, zinc and other heavy metals enrichment of the evaluation study ". Journal of Nanchang University? Engineering, p. 26, No. 1 March 2004, paragraph 86 - 8830 sensitivity, horses to school, Li Lan," 17 vegetables in the lead cadmium chromium content analysis research.
 "Ma River Ecology, Floride: CRCPressjnc 1990:1794 19'3, 43 Kumar R.L, Malik Y.M., LIS.L Browneta1 Phytore mediation of soil metal.Current Opinions in biotechnology ,1997,8:279 - 28444Yang Yuangeo (Yang root), PatersonE and Campbe Accum Xihu green tea has a long historical standing and rich cultural connotation. ation of heavy metal in urban soiI sand impact sollmiero organiam [J], Environment al of science (Environmental Science ), 2001.22 (3) 44 ~ 4845 Grekovskii VG.FridA S and Timokhin PA.
Sup (2): 20352 Li Feng Min, Xiongzhi Ting, Zheng Zhenhua "7 species of higher plants and their tolerance of lead bioaccumulation study" Agriculture Environmental Protection 1999,18 (6): 246 - 25 053 Dai Jingping, Yue-Hua Hu, "cattail plant physiological characteristics and its impact on mine tailings environmental protection ", Mining Engineering, Decemher232003 V01.23 No, 632 ~ 3454 Yonggang, Jiang Zhilin. In the years that the temperature is normal, new Xihu green tea leaves generally sprout within the ten days earlier than the Grain Rain.  Luo strong" side of the road and tea in the tea garden soil accumulation of heavy metals and distribution of the "Nanjing Forestry University, V01.26, No.4Jul., 200255 Xin-Min Wu.
73 Yuan Shi value, Ma Lifeng, Korean, go far, "lead in tea The cumulative nature of the absorption in the "Chinese Agricultural Sciences, 2003,36 (11): 1272 - 127 874 Lu Guowei," the soil and determination of lead content in tea, "Documentation and Information of Preventive Medicine, 2002,8 (2): 221. To be specific, we should evaluate the “color”, “aroma”, “taste” and “shape” of the Xihu green tea.  Encyclopedia of Biology, China too Editorial Board.