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引进24种优良牧草在青海省海北州西海镇进行了为期两年的不同播种季节、不同播种密度及豆科与禾本科牧草混播的小区种植试验。结果表明春季播种比夏季播种更有利于各种牧草的生长发育和提高牧草的越冬成活率,临冬寄籽播种对部分禾本科牧草是可行的且其生长第一年比春季播种生长当年有更优异的表现;不同播种密度在种植当年对牧草覆盖度和产量有明显影响,而对发育期和生长高度的影响不大,在种植第二年这种影响趋于减弱。通过对各种牧草生长发育状况的观测和分析,比较其在越冬性能和产量方面的表现,并在地理气候适应性分析的基础上,选择确定了9种适宜在本地部分地区推广种植的草种(品种)。
Twenty-four species of good forage were planted in Xihai, Haibei, Qinghai Province for two years with different sowing seasons, different sowing densities, and plots plot cultivation of legumes and grasses. The results showed that sowing in spring was more conducive to the growth and development of all kinds of pasture and the overwintering survival rate of herbage than sowing in summer. Seeding of seeding was feasible for some grass species and the first year of growth was more than that of spring sowing Excellent performance; different sowing density in the planting year had significant effects on herbage coverage and yield, but had little effect on the developmental stage and growth height, and this effect tended to weaken in the second year of planting. Based on the observation and analysis of the growth and development of various forage grasses, the performance of the forage on winter performance and yield was compared. Based on the analysis of geo-climatic adaptability, nine species of grass suitable for planting in some parts of the country were selected (Variety).