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根据辽宁西部山区地广人稀,植被稀少,水土流失严重,土壤贫瘠,农牧业生产落后的现状,从改变山区面貌发展农牧业生产的实际需要出发,急待解决大面积快速种草,迅速恢复植被,控制水土流失,提高土壤肥力,发展农牧业生产的途径与措施,为此,1980年—1982年止,于建平县北部黄土低山丘陵区进行了飞播绿肥牧草试验.并于播后至1985年对其效益进行了观测.经三年重复播种,播种面积2.1万亩,播种有效面积达90%以上,成草面积达80%,播后植被覆盖度普遍增加20%以上.管护好的播区增加50～80%,成草以后效益亦比较明显.草地径流量比荒山减少52%,泥沙流失量减少19.8%,草地土壤肥力得以改善.有机肥比播前增加2—3倍.农业增产81.4%,草食性家畜增加30～60%,草的单项年人均收入达30～113元,总的看三年重复飞播种草达到了预期的目的,获得了成功.
According to the actual needs of the mountainous areas in western Liaoning, which are sparsely populated, scarce vegetation, serious soil erosion, poor soil conditions and backward production of agriculture and animal husbandry, Quickly restore vegetation, control soil and water loss, improve soil fertility, and develop ways and measures of farming and animal husbandry production. For this reason, from the year of 1982 to 1982, the experiment of aerial seeding green manure was conducted in the hilly area of loess plateau in northern Jianping County. The benefits were observed after sowing till 1985. After three years of repeated sowing, the sown area was 21000 mu, the sowing effective area reached more than 90% and the area of grass reached 80%. After sowing, vegetation coverage generally increased by more than 20% , The area with good management and protection increased by 50-80% and the benefit after planting was also obvious.The runoff of grassland was reduced by 52% than that of barren hills and the loss of sediment was reduced by 19.8%, and the soil fertility of grassland was improved. 2-3 times .Agriculture increased 81.4%, herbivorous livestock increased 30 ~ 60%, grass single annual per capita income of 30 to 113 yuan, the total see three years of repeated aerial seeding grass to achieve the desired goal, and achieved success.