To determine the effect of honey bee (Apis mellifera L.) pollination on sunflower yield using the most appropriate number of beehives per unit area of crops is very important. By comparing the number of hives and yield components, we can satisfy optimal pollination needs and improve economic yields. For this purpose, a series of experiments were conducted at thatha Khalil farmer field Taxila Rawalpindi, under the supervision of Beekeeping and Hill Fruit Pests Research, Station Rawalpindi, Pakistan, with four treatments for comparison: 1 hive acre⁻¹, 2 hives acre⁻¹, 3 hives acre⁻¹, and 0 hives acre⁻¹ as a control. The hives were kept inside the experimental area and pollination density, pollinator’s diversity, agronomic yield, and economic yield were determined. Two acres of sunflower field were sown and four bee colonies were introduced at 5% to 10% flowering. The maximum visitation frequency of A. mellifera was recorded at the weekly interval from 24 to 09-2019 to 24–10-2019, according to which maximum visitation was observed (44.8, 38.4, and 16.5 plant⁻¹ 5 min⁻¹) at 10:00, 12:00, and 14:00 hrs, respectively. Data regarding foraging pollinators revealed that A. mellifera was the most dominant pollinator of the sunflower crop with the highest abundance 17.11% followed by A. cerana (3.46%) and the population of A. dorsata was minimum (2.12%). Furthermore, agronomic parameters (number of seeds plant⁻¹, 100 seed weight (g), and economic yield were significantly higher in those fields which were pollinated by more beehives in comparison to fewer beehives.

要确定蜜蜂 ( Apis mellifera L.) 授粉对向日葵产量的影响，使用单位面积作物中最合适的蜂箱数量非常重要。通过比较蜂箱数量和产量成分，我们可以满足最佳授粉需求并提高经济产量。为此，在巴基斯坦拉瓦尔品第站养蜂和山果害虫研究的监督下，在 Thaha Khalil 农田 Taxila Rawalpindi 进行了一系列实验，有四种处理进行比较：1 蜂巢英亩^-1、2 蜂巢英亩^{- 1}、 3 蜂巢英亩^-1和 0 蜂巢英亩^-1作为控制。将蜂箱置于试验区内，测定授粉密度、授粉媒介多样性、农艺产量和经济产量。播种了两英亩的向日葵田，并以 5% 到 10% 的开花率引入了四个蜂群。A. mellifera的最大访问频率记录在从 24 到 09-2019 到 24-10-2019 的每周时间间隔内，据此观察到最大访问频率（44.8、38.4 和 16.5 植物^-1 5 min ^-1）分别为 10:00、12:00 和 14:00。有关觅食授粉媒介的数据显示，蜜蜂花是向日葵作物中最主要的授粉媒介，丰度最高，为 17.11%，其次是A. cerana(3.46%) 和A. dorsata 的数量最少 (2.12%)。此外，与较少蜂箱相比，在由较多蜂箱授粉的那些田地中，农艺参数（种子植物数^-1、100 种子重量 (g) 和经济产量）显着更高。