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在海北州西海镇和牧试站人工草地试验基地,门源县浩门镇、刚察县沙柳河镇等四个点上开展了1~4秋眠级的紫花苜蓿(Medicago sativa)小区种植试验。结果表明,紫花苜蓿供试品种在不同试点上生长发育状况差异较大,种植当年发育程度、生长高度、覆盖度和产量差异明显;越冬成活状况受气象条件和土壤条件的共同影响,其中刚察沙柳河镇的试验种植不成功;若种植当年能够越冬成活,则从第二年开始进入旺盛生长期,每年可收获1茬,产量随生长年限的延长而增加,越冬不再成为障碍,但果实不能成熟。通过适应性和高原气候特点的分析,初步界定了海北地区紫花苜蓿适宜推广种植区域。
Planting trials of alfalfa (Medicago sativa) plots of 1 to 4 fall dormancy levels were carried out at four sites of Xihai Town and Munshi Station artificial grassland test base in Haibeizhou, Haimen Town of Menyuan County and Shaliuhe Town of Gangcha County. . The results showed that the alfalfa cultivars differed greatly in their growth and development status on different experimental sites. The developmental level, growth height, coverage and yield of alfalfa cultivars were significantly different at the planting year. Surviving status of alfalfa was affected by both meteorological conditions and soil conditions. Among them, Shaliuhe experimental planting is unsuccessful; if planting can survive the winter, then the second year into the vigorous growth period, harvesting a crop a year, the output increases with the growth of the growing years, winter is no longer an obstacle, but the fruit Not mature. Based on the analysis of adaptability and the characteristics of plateau climate, the suitable planting area of alfalfa in Haibei region was defined.