去年高台公社牛彦大队第二队和第五队,进行了利用马蜂防治棉花棉铃虫和造桥虫的试验。试验面积30亩,放马蜂84窝,平均每亩放蜂2.4窝,取得了一定防治效果。刚一开始,群众都怕马蜂蜇,不敢助迁。后来,掌握了马蜂的活动规律。白天观察好马蜂所在的场所:房檐、墙角、树上、山坡、石缝和荆条 Last year, the Gaotong Commune Niu Yan Brigade second team and the fifth team carried out the use of wasps to control cotton bollworm and parasite test. Test area of ​​30 acres, put the nest nest 84 wasps, the average bee 2.4 bee nest per acre, and achieved a certain control effect. At the beginning, the masses were afraid of stinging wasps and daring to move in. Later, mastered the activities of the wasp. Observe the place where the wasps are during the day: eaves, corners, trees, hillsides, crevices and vitex