海北地区紫花苜蓿引种试验研究

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。

THE EXPERIMENT AND RESEARCH ON MEDICAGO SATIVA FETCH IN AND PLANTING IN HAIBEI DISTRICT

In the 4 districts of Haibei Xihai. Gangcha Shaliuhe and Menyuan Haomen, put up small area plant experiment toward Medicago sativa that their level of fall - dormancy was 1- 4. Experiment result shows ： upgrowth status of Medicago sativa used experiment difference bigger because different meteorology condition in different examination area, difference of upgrowth pitch, growth height, overcast pitch and yield was obvious in first year; Meteorology and soil condition together influence their live through the winter and survive status, thereinto experiment planting in Gangcha Shaliuhe was failing：If capable live through the winter and survive in first year, then turn into hearty growth period since second year, capable harvest 1 - 2 times per year, yield add go with growth fixed number of year,live through the winter anymore became obstacle,but fructification was in- capable of grown up. Via analyse toward adaptability and tableland clime characteristic, preliminary confirmed fitting extend plant area of Medicago sativa in HAIBEI district.