紫穗槐是一种豆科灌木,对旱、涝、盐、寒、瘠、薄都有较强的适应性。紫穗槐根部生有大量的根瘤菌,能摄取空气中的游离氮,增加土壤中的氮素。嫩枝叶是极好的有机肥,含氮1.32%、磷0.3%、氧化钾0.79%。氮素含量相当于草头(黄花苜蓿)的1.16倍、蚕豆的1.4倍、田菁的1.56倍。每一千斤鲜嫩 Amorpha fruticosa is a leguminous shrub that has strong adaptability to drought, waterlogging, salt, cold, barren and thin. Amorpha roots rooted with a large number of rhizobia, can ingestion of free nitrogen in the air, increase soil nitrogen. The tender leaves are excellent organic fertilizers, containing 1.32% nitrogen, 0.3% phosphorus and 0.79% potassium oxide. The nitrogen content is equivalent to 1.16 times that of grass head (Medicago falcata), 1.4 times that of fava bean and 1.56 times of that of Sesbania. Each kilogram fresh and tender