To investigate the toxic effects of heavy metal on Chinese herbal medicine,the vatiations of physiological features caused by Pb in houttuynia cordata thunb were studied. The experiments were carried out in the simulation environment of Pb contamination. Houttuynia cordata thunb was planted in pots,after a certain period of growth,the soluble protein,total flavonoids,and chlorophyll content were determined,and the data was subjected to statistic analysis. It was demonstrated that,with the increment of Pb in...
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