苜蓿与禾本科牧草的混播效果

Study on mixculture of alfalfa with grasses

本试验研究了不同苜蓿(Medicago sativa)品种单播及其与禾本科牧草混播组合的适应性和生产力,旨在探讨适宜于内蒙古呼和浩特地区推广种植的苜蓿品种及其混播组合。结果表明,一年刈割两次时,草原3号苜蓿和中草3号苜蓿的各产量指标均优于金皇后苜蓿和苜蓿王;老芒麦(Elymus sibiricus)和无芒雀麦(Bromus innermis)产量低于4个单播苜蓿,但无显著差异(P>0.05);混播提高了草原3号苜蓿、中草3号苜蓿、老芒麦和无芒雀麦的植株高度、再生速度以及产草量,其中苜蓿与无芒雀麦的混播产量高于苜蓿与老芒麦混播。

To discuss alfalfa（Medicago sativa ） cultivars and mix-planting combinations which are fit to cultivate in Hohhot, Inner Mongolia, the adaptability and productivity of different planting models, including single p single p of Gold ng alfalfa and mixculture of alfalfa with grasses were studied. The results showed that, for ng, yield indexes of Caoyuan No. 3 alfalfa and Zhongcao No. 3 alfalfa are all higher than those ss alfalfa and Epress alfalfa, under condition of cutting 2 times per year. The yields of Elymus t Brornus inermis are lower than those of single planting 4 alfalfa cultivars, but there is no significant difference among them（P〉0.05）. Mixculture enhances the plant height, regeneration rate and yuan No. 3 alfalfa, Zhongcao No. 3 alfalfa, E. sibiricus and B. inerrnis. The yield of combinala and B. inerrnis is higher than that of combination of alfalfa and E. sibiricus.