贵州天然豆科牧草——不丹黄芪的引种驯化

GUIZHOU NATURAL LEGUMINOUS GRASS——INTRODUCTION AND DOMESTICATION OF ASTROGALUS BHOTANENSIS

对采自贵州省威宁县（海拔２３２０ｍ）的不丹黄芪野生原种进行了引种驯化。认为，经过引种驯化的不丹黄芪威牧９号（Ａｓｔｒｏｇａｌｕｓｂｈｏｔａｎｅｎｓｉｓｃｖ．ＷｅｉｍｕＮｏ９．）具有产草量高，耐寒抗旱特性。可产鲜草４５．０～５２．５ｔ／ｈｍ２，收纯净种子３７５～４５０ｋｇ／ｈｍ２。经放牧观察，牛、羊喜采食，食后无任何不良反应，是我国中亚热带及暖温带地区草地改良补播的最佳草种，也是人工草地混播的优良草种。

Wild native species A. bhotanensis, collected from Weining County, Guizhou Province, was introduced and domesticated. The introduced and domesticated Bhutan milkvetch, A.bhotanensis Baker cv. Weimu No.9, owned the characteristics of high yield of producing grasses and cold- tolerance and drought-resistance. The yield of fresh grasses got to 45～52.5 t/hm 2, the neat seeds yield reached 375～450 kg/hm 2. By observation of grazing, cow and sheep like eating and not any bad reaction after eating. It was the best grass seeds of grassland improved and over-drilled in mid-subtropic and warm extratropical belt area, and was also a fine grass seeds of artificial grassland mixed sowing.