甘肃高寒阴湿区国外10种优良牧草引种栽培试验

在甘肃高寒阴湿区引进10种国外优良牧草，通过3年的生育期和产草量测定，结合抗病虫害能力、家畜适口性评估以及牧草营养成分的分析，筛选出适合该地区的优良牧草品种。结果表明，紫花苜蓿、苏丹草、俄菜抗病虫害能力较强，丰产性好，适口性佳，适宜在高寒阴湿地区推广。其中，俄菜年平均产量（干重）为69500kg／hm^2，粗蛋白含量为20．1％；紫花苜蓿年平均产鲜草产量折合干重为15500．0kg／hm^2，粗蛋白含量为18．6％；苏丹草年平均产鲜草产量折合干重为18800kg／hm^2，粗蛋白含量为14．8％。

Study on introduction and cultivation of 10 abroad forage in highland humid areas of Gansu

Abstract： For high quality forage production, 10 forages were studied according to the local geographical conditions,, the data of growth period and yield, combined the ability of resistance diseases and pests and live- stock palatability and forage nutrients were used to evaluate the high quality forage spesies. The results showed that Medicago sativa L. ,Sorghum sudanense （Piper） Stapf. and Symphytum officinale had a. higher resist- ance for diseases and pests, high yield and good palatability. Among three forages, the average annual dry matter yield and the content of crude protein of Symphytum officinale i were 69 500 kg/hm^2 and 20.1%, repectively The average annual dry matter yield and the content of crude protein of medicago sativa L. were 15 500.0 kg/ hm^2 and 18.6% ,repectively. The average annual dry matter yield and the content of crude protein of Sorghum sudanense （Piper） Stapf. were 18 800 kg/hm^2 and 14.8% ,repectively