苜蓿(Medicago sativa)是一种高蛋白的豆科牧草,在种子生产中由于其花器的特殊性,一般的授粉昆虫(包括家蜂)都难以打开其花器,很难起到传粉作用,致使靠异花授粉的苜蓿种子产量低、品质差。本世纪70年代,美国、加拿大等国家发现苜蓿 Medicago sativa, a high-protein leguminous pasture, is hard to pollinate because of the special nature of its flowers in the production of seeds. It is hard for pollinators (including domestic bees) to open their flowers, Cross-pollination of alfalfa seed yield, poor quality. 70s of this century, the United States, Canada and other countries found alfalfa