摘要
阿拉善左旗４年机械模拟飞播牧草累计面积为２９８０ｈｍ２，实播面积为２９８０ｈｍ２，１９９７年１０月调查，保存面积为２９７０ｈｍ２，保存面积率为９９．７％。４年来播区植被盖度提高８．９６倍，有苗面积率提高３１．５３倍，牧草产量提高３５．９１倍。第一性生产产值和第二性生产产值分别是飞播总投资的０．６７倍和０．９７倍，机械模拟飞播牧草表现出明显的经济效益、生态效益和社会效益。
During 1992～1996 a new mechanised seeding method was employed for establishing pastures in Alashan Left Banner of Inner Mongolia. The method was based on a machine using pumped air to spray seeds over the ground, simulating the effect of aerial sowing by an aeroplane. The method proved to be highly effective. By an investigation conducted in October 1997, the accumulated area sown by the method had reached 2 980 hectares, among which 2 970 hectares were successfully established, with a significant reduction in seeding cost, compared to aerial sowing, and an increased forage yield of 35.9 times as high as that of the natural native vegetation without artificial additive sowing.
出处
《草业科学》
CAS
CSCD
北大核心
1998年第6期47-50,共4页
Pratacultural Science
关键词
机械模拟
飞播牧草
效益调查
牧草
播种
mechanised seeding, aerial sowing, benefit investigation
