无产阶级文化大革命以来,广大工农兵群众,在毛主席革命路线的指引下,坚持以阶级斗争为纲,批判修正主义,积极参加科学实验活动,显示出工农兵主力军的作用。辽宁省绥中县李家公社石牌坊大队的生物防治研究所农民技术员王树海同志和广大贫下中农一起,十年来坚持以毛主席哲学思想为指导,积极开展利用“天敌”来防治果树虫害的研究,使大队的苹果虫果率由35%下降到千分之六,基本上消灭了等外果。在实践中发现了100多种“天 Since the Great Proletarian Cultural Revolution, the broad masses of workers, peasant and soldiers, under the guidance of Chairman Mao’s revolutionary line, have insisted on using class struggle as a key link, criticizing revisionism and actively participating in scientific experiment activities, demonstrating the role of the main force of the workers, peasants and soldiers. Over the past decade, Comrade Wang Shuhai, a farmer technician working with the Peasants’ Technician at the Institute of Biological Control of the Stone Pagoda Brigade at Lijia Commune, Suizhong County, Liaoning Province, persisted in using the philosophy of Chairman Mao as its guide over the past decade and actively carried out research on using “natural enemies” to prevent and control fruit tree pests. So that the brigade rate of apple fruit dropped from 35% to 6%, basically eliminated the other fruit. In practice found more than 100 kinds of "days