Study on the Seudoperennial Propagation and Utilization of Astragallus sinicus after Wetland Rice

The seudoperennial propagation and utilization of Astragallus sinicus has been conducted since 1991.The results showed that the plants with certain mature seeds incorporated into soil at plowing time in Spring were distributed almost evenly in 0～10 cm soil layer and the seeds in soil could germinate in Autumn.The germination rate of seeds in the soil varied with the depth of seeds in soil layers.The germination rate of astragallus seeds in 0～4cm soil was about 72.9%of the total seeds in that layer.The biomass production of astragalus harvested in 1992,1993,1994 and 1995 was about 32.58,37.19,34.17 and 28.5t/hm2 respectively.This system is a simple,ecomomic and good for soil fertility and management,which opens a new way for sustainable agriculture.