大通河上游梭罗草品种比较试验研究

Comparative experimental study on the variety of Kengyilia thoroldiana in the upper Datongriver

在祁连山区的大通河上游对梭罗草进行品种比较试验,利用青海冷地早熟禾和同德小花碱茅作为对照,进行3年的栽培观测试验。结果表明,梭罗草能在祁连山区海拔3700m的地区正常完成生育期,生育期为95d,较对照明显早熟,梭罗草的株高低于对照品种,栽培第2、3年,梭罗草牧草产量与种子产量与对照差异不显著,认为梭罗草在祁连山高海拔地区的适应性较好,通过驯化选育可作为该地区适宜栽培草种。

The variety comparison experiment of Kengyiliathoroldiana（ Oliver） J. L. Yang,Yen et Baumwas was carried out in the upper reaches of Datong river in Qilian mountains,andthe cultivated observation experiment was carried out for 3 years by using Poacrymophila Kengcv. Qinghai and Puccinelliatenuiflora（ Griseb.） Scribn. et Merr. cv. Tongde as control. The results showed that Kengyiliathoroldiana could normally complete the growth period in 3700 m above elevation in Qilian mountain area,the growth period was 95 d,which was obviously earlier than the control. the plant height of Kengyiliathoroldiana was lower than the control,in the second and third years of cultivation,the pasture yield and seed yield of Kengyiliathoroldiana were not significantly different with the control. the adaptability of Kengyiliathoroldiana was better in Qilian mountain high altitude area. it could be used as the suitable cultivation grass species in this area by domestication and breeding.