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1983—1985年,在海拔高度约3千米的甘肃省天祝基金强河地区进行了豆科牧草引种试验。通过对48个豆科牧草供试材料的生育期、越冬率、产草量等性状的观测研究,初步筛选出抗寒性强、越冬性较好的呼盟黄花苜蓿、昭盟黄花苗蓿 x 杂种苜蓿、杂种苜蓿、草原Ⅰ号苜蓿、润布勒苜蓿五个材料,供生产上试种。通过试验,说明越冬前灌水和覆盖处理对提高豆科牧草越冬率有良好作用。此外,还观察到了一些具有放牧型品种特征的,以及长穗的,可作为有价值的育种材料加以利用。
From 1983 to 1985, introduction of leguminous forages was conducted at Qianghe, Gansu Tianzhu Fund Project, about 3 km above sea level. Through the observation and study on the growth period, overwintering rate and grass yield of 48 legume pasture materials, we initially screened out the high-cold-resistant and overwintering Hueyou alfalfa, Hybrid alfalfa, hybrid alfalfa, prairie Ⅰ alfalfa, Runbulu alfalfa five materials for the production of trial planting. Through experiments, it shows that irrigation and overwintering before winter has a good effect on increasing overwintering rate of leguminous pasture. In addition, some species with grazing breeds, as well as long spikes, were also observed for their use as valuable breeding material.