在毛主席革命路线指引下,在“农业学大寨”运动的高潮中,山西省和运城地区的领导,都很重视赤眼蜂防治棉铃虫工作。我们根据上级指示,加快步伐,经过一年实践,对当地赤眼蜂种类、生物学特性、人工繁殖和田间放蜂等,做了很多调查研究。并根据计划,在运城地区几个县和广大群众在一起,用680多万头蜂放 Under the guidance of Chairman Mao’s revolutionary line, in the climax of the campaign of “learning from agriculture in Dazhai”, leaders of Shanxi Province and Yuncheng all attached great importance to the prevention and control of cotton bollworm work by Trichogramma. According to instructions from the higher authorities, we accelerated the pace and after a year of practice, we did a lot of investigation and study on the species, biological characteristics, artificial breeding and field beekeeping of Trichogramma. And according to the plan, several counties in the Yuncheng region and the masses together, with more than 680 million bee