沙打旺种植技术（Cultivation techniques of Astragalus adsurgens）.doc

沙打旺种植技术（Cultivation techniques of Astragalus adsurgens） Cultivation techniques of Astragalus adsurgens Time: 2011-07-26 (Astragalus hungneensis H.C.Fu.et Y.H.Lin. sp..) also known as hemp bean seedling, thin sand, stubborn king. The origin of the old course of the Yellow River area of our country, the existing field cultivation history in the last hundred years. In recent years, with the development of animal husbandry industry and soil conservation, more attention has been composed of Astragalus adsurgens, Shandong, Henan and other places to expand across the country, expanding cultivated area. Astragalus adsurgens is forage, the planting of 2 - 4 years, per acre of fresh forage or hay 600-800kg 2000-4000kg. Even in arid areas, 200-300kg per acre is available in dry areas. A plantation can take 5 to 6 years. Astragalus adsurgens is rich in nutrition. According to the determination of early flowering grass, containing 25% dry matter, dry matter digestion can always 18.38MJ/kg, 9.49MJ / kg (pig), crude protein 15.1%, digestible crude protein 99g / kg, crude fiber 38.4%, CA 0.48%, P 0.19%. The amino acid content in the rich. In the early flowering stage, three kinds of dry matter limit the content of essential amino acids, lysine 0.66%, tryptophan 0.08%, methionine 0.10%. Milkvetch root developed, nitrogen fixation ability, improve soil structure, improve soil fertility effect. Planting fourth years may leave the root of an area of not less than 5 tons of organic matter in the soil slopes per mu. At early stage of Astragalus adsurgens, contained 1.58% nitrogen, phosphorus in root 0.25%, K 0.43%. A residual fertilizer of Astragalus adsurgens, continued from 3 to 5 years, the crop yield more than 20%. Is the wind, sand, Astragalus adsurgens and soil good soil and water conservation and desertification plant. The maximum soil and water conservation benefits can be obtained by the sand drift erosion, erosion gully, ditch slope and so on. I. requirements for environmental