“牛腿”山药良种,系辽宁省农业科学院园艺研究所从引进的17个山药品种中,经过辐射处理和精心培育筛选而成的优良品种。 特征特性 该品种株高235厘米,拥有10～14条肉质根,平均根长100厘米,根粗0.13厘米,水平生长;茎蔓生、4棱形、粗0.53厘米,主茎长215厘米,节间长5.7厘米;茎节叶腋处着生“零余子”,有侧枝12～16条,侧枝长30～40厘米,侧枝节间长3～4厘米;块茎短而粗,呈纺锤形,表皮褐色,表面光滑,根瘤较少,块茎长51厘米,单株重670克,干物质含量达 “Leg” yam varieties, the Department of Horticulture of Liaoning Academy of Agricultural Sciences from the introduction of 17 varieties of yam, after radiation treatment and carefully cultivated and screened of fine varieties. Characteristics of the varieties Height of 235 cm, with 10 to 14 fleshy roots, the average root length of 100 cm, 0.13 cm thick roots, horizontal growth; stems and spurs, 4 prismatic, 0.53 cm thick, the main stem length of 215 cm, internode Long 5.7 centimeters; stem leaf axils at birth, “more than child”, with 12 to 16 lateral branches, lateral branches 30 to 40 cm, lateral branch length 3 to 4 cm; tubers short and thick, spindle-shaped, epidermal brown, surface Smooth, less nodulated tubers 51 cm long, 670 grams per plant, dry matter content of up to