青海牧区8种矮禾草生产经济性状品比试验

Variety comparative test for the productive economic traits of eight kind of short grasses in Qinghai pastoral area

为了给青海省高寒人工草地建设和生态治理工程提供基础数据,试验对青海省牧草良种繁殖场主栽的8种多年生矮禾草进行了连续4年的观测,对牧草产量、花期营养成分、种子产量和牧草生育期等主要生产经济性状进行比较分析。结果表明:供试的8份多年生矮禾草对本地区生态气候环境具有极强的适应性,在产草量及产籽量等经济性状方面差异很大,其中扁茎早熟禾作为唯一的根茎性牧草,适应性和各项经济性状最高,其次为羊茅属的3个品种和冷地早熟禾。

To provide the basic data for the construction of artificial grassland in alpine and ecological management engineering in Qinghai prov- ince. The eight kinds of perennial short grasses planted in the fields of the Qinghai provincial forage seed breeding farm, were continuously mo- nitored and recorded for four years, and then the main economic traits of the short grasses were compared and analyzed, including forage yield, nutritional contents of the flowering period, seed yield, forage growth period, etc. The results showed that the eight kinds of the perennial short grasses as the experimental materials, had extremely strong adaptability to the ecological and climatic environment in the region. These experi- mental materials were obviously different on the economic traits, including grass yield and seed production, etc. Thereinto, Poa pratensis var. anceps. Gaud as the sole rhizomatous forages, had the highest adaptability and the highest economic traits, followed by the three varieties of Fe- stuca and Poa crymophila Keng.