Research on Effects of Incorporation of Milk Vetch (Astragalus Sinicus) on Paddy Soil Microbes

Abstract

Objectives Chinese milk vetch (Astragalus sinicus) is a major green manure planting in southern paddy fields. This paper designs an experimental to discuss the effects of incorporation of milk vetch on paddy soil microbes, including theeffects on microbial population, the effects on microbial biomass carbon, the effects on microbial biomass nitrogen and the effects on microbial biomass phosphorus in order to provide some references for the relevant researchers. Concept of Chinese Milk Vech The Chinese milk vetch, also known as Astragalus sinicus, is native to China. It likes warm and humid conditions and has a certain hardy ability. The Chinese milk vetchrequires sufficient moistureduring the whole growth period. Milk vetch on the soil loose, Sandy and clayey loam is suitable to. The Chinese milk vetch has low tolerance to salt tolerance, which is a kind of legumes and astragalus. A mast root, lateral roots buried shallow, a cylindrical stem, hollow, tender and juicy, sparsely pubescent. Leaves mostly odd pinnate, flowers in umbels, axillary, few top students, pod two column joint into a triangle, kidney shaped seed, seed coat smooth, root and seed and straw can be used as medicine, replenishing qi to invigorate the spleen, detoxification analgesic effect. China is one of the main honey plants. Chinese milk vetch belong to the legume Astragalus is a traditional green manure crop and paddy rice the main winter green manure crop it can improved soil, improve soil fertility, to increase the yield of rice and maintain the sustainable development of rice production has important significance. Chinese milk vetch, as a kind of main paddy leguminous green manure contains rich trace elements and its pressure field can be fixed, activation and enrichment in soil nutrients for crop growth, increase the content of soil organic matter, improve the ecological environment. Moreover, in the rice-rice-milk vetchrotation, it reduces plant diseases and insect pests, improves soil micro environment.