The results showed that:(1) Lucerne nectar production was positively correlated with honey bee visitation (r=0.9299**), honey bee visitation and seed production were positively correlated either (r=0.8716*).

• 花苜蓿的单位面积花蜜量与蜜蜂拜访数量呈极显著正相关(r=0.；9299~(**))，自然蜜蜂拜访数量与种子产量呈显著正相关(r=0