1985～1987年在我省阜新、建平两县8个试点的3.6万亩人工草地及飞播草场应用飞机喷施氮、磷、钾、微量元素、植物生长调节剂和稀土元素的试验表明,无论是单施还是混施都有效地促进牧草的生长发育,增加株高和茎叶比,使牧草的产量明显增加,其干草增产幅度为2.7～81.8％,种子增产幅度为3.0～38.8％,经济效益显著. From 1985 to 1987, experiments on spraying 36,000 mu of artificial grassland and seeding grassland with 8 pilot pilots of nitrogen, phosphorus, potassium, trace elements, plant growth regulators and rare earth elements in 8 pilot projects in Fuxin and Jianping counties of our province were carried out. Whether single application or mixed application can effectively promote the growth and development of forage grass, increase the height of plant and the ratio of stems and leaves, increase the output of forage grass obviously. The yield of hay increased from 2.7% to 81.8% and the seed yield increased from 3.0% to 38.8% Benefit significantly.