Effects of arsenic on growth,saponins and flavoids yield of Panax notoginseng (Burk.F.H.Chen) and its control measurements

摘要

Arsenic stress inhibited the growth of Panax notogensing.The citric acid and phosphorus fertilizer can promote the growth of notogensing,increase the biomass and morphological index,improve the efficacy of saponins and flavonoid contents.They also make it release of soil arsenic,increasing arsenic content in Panax notogensing to exceed the standard,phosphorus is not conducive to the release of arsenic in soil,reducing the absorption arsenic in plants.