꿀벌과 서양뒤영벌의 가을철 시설수박 화분매개활동 특성

This study was examined carefully the characteristics on the pollinating activities of honeybee, Apis mellifera and bumblebee, Bombus terrestris as pollinator on the watermelon flowers (Citrullus vulgaris Schrad) and was compared with the effects of the pollination by A. mellifera, B. terrestris and the artificial pollination in the watermelon houses from 15 September to 18 September 2005 in Non-san City. The pick times of pollinating activity by A. mellifera and B. terrestris were examined about 11:00 and 09:00a.m., respectively. The increase on the numbers of the foraging activities of honeybee and bumblebee was positively correlated with the increase on the number of the watermelon flowers. The fruit setting rate by A. mellifera, B. terrestris and artificial pollination were same level with over 94%, respectively. The weight of the watermelon produced by A. mellifera, B. terrestris and artificial pollination were same level with about 4.4kg weight. The effects on the pollinating activities of honeybee, bumblebee and artificial pollination were same. But releasing bees cut down expenses as half time as the pollinating cost in comparison with artificial pollination. Therefore this study was showed that A. mellifera and B. terrestris could be used comparatively good pollinators instead of artificial pollination under the environment in watermelon vinyl-houses on autumn season.