吉林省集安市园艺特产研究所所长梁山，从１９８４年开始研究，引进培育牧草，１５年来，共引进各类优质牧草近５０种，并向全国２０个省的２００多个市县成功地推广了以优质高产牧草——饲料菜为骨干的牧草达２０００余亩，取得了显著的经济效益和社会效益。在全国由北到南掀? Liangshan, director of the Institute of Horticultural Products of Ji’an City in Jilin Province, started to study and introduce forages in 1984 and has introduced nearly 50 species of pasture of various kinds over the past 15 years and successfully applied it to more than 200 cities and counties in 20 provinces across the country The promotion of high quality forage grass - feed dishes as the backbone of more than 2000 acres of forage, and achieved significant economic and social benefits. In the country from north to south lift?