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沙打旺是豆科黄蓍属多年生草本植物。原产我国黄河故道地区。具有耐旱、耐瘠、抗寒、抗风沙、产草量高、低毒、草质好的特性,是我国特有的牧草,绿肥和水土保持兼用型草种。我省引种沙打旺时间短,但发展较快。1982年引入,现已累计推广100万亩,其中早熟沙打旺是各地大力推广的主要品种,占64%。一、根系的作用沙打旺能改善土壤的理化性状,促进土壤团聚体的形成,增加有机质、氮素及可溶性磷的含量。
Astragalus is a Leguminosae perennial herb. Origin of China’s old course of the Yellow River. With drought-resistant, barren, cold, wind sand, high yield, low toxicity, good grass quality characteristics, is our unique forage, green manure and soil and water conservation grass. Introduction of sand in our province a short time, but the rapid development. It was introduced in 1982 and has now been popularized to a total of 1 million mu. Among them, Astragalus pregabalum is the main variety vigorously popularized in various places, accounting for 64% of the total. First, the role of root system Astragalus can improve soil physical and chemical properties, promote the formation of soil aggregates, increase the content of organic matter, nitrogen and soluble phosphorus.