【摘要】 1990年～1991年在新疆7个地（州）市的20个县（市）和区辖国营牧场进行了稀土在牧草生产中开发应用的研究。两年来,累计应用面积约14077hm²,新增总产值125.3万余元,产投比达5.8～33.1:1,新增干草总量849.6万公斤。开发研究表明,新疆牧区主要土壤中可溶态稀土含量多在5.5～8.3mg（RE₂O₃）·kg^-1之间,施用稀土表现有效。稀土具有提高牧草成苗密度,促进植株生长发育、生理活性和增强牧草植株抗旱抗寒性的作用。更多还原

【Abstract】 In 1990～1991,developing research and application of rare earth（RE）to forage production were conducted at 20 countys of 7 regions（or states）in Xinjiang Uygur Autonomous Region.The result showed that amount areas of RE applied with foliar spray and seed dressing were 14077hm²,increasing nte profits were 1253000 chinese yuan,and the outpot/input ratio were 5.8～33.1:1,and increasing new hay products were 8496000kg.The test results of developing research indicated that the content of dissoluble RE in soils of Xinjiang grasslands was very low with about 5.5～8.3mg（RE₂O₃）.kg^-1 soil and showed that foliar or dressed applied of RE can give better effects on plant growth and forage yield.The yet test results showed that RE had promoting plant growth,increasing physiological activities as well increasing cold and dry resistance of grass plants.更多还原