一、历史的回顾解放以来,我国的生物防治站,从无到有,从小到大。1972年全国成立生物防治协作组后,生防应用面积为120万亩,1974年全国生防会议统计,生防应用面积为840万亩,1975年为2725万亩,1976年据14个省、市统计,已达一亿零五百亩,1981年达一亿三千多万亩。1975年全国生防以虫治虫会统计,县以上生防站单位有1001个,社队级生 I. Historical Review Since the liberation, China’s biological control stations have grown from nothing to small ones. After the establishment of the National Collaborative Group on Biological Control in 1972, the area of ​​biocontrol application was 1.2 million mu. Statistics of the National Conference on Biocontrol and Prevention in 1974 included 8.4 million mu of biocontrol application area and 27.25 million mu in 1975. According to the data of 14 provinces, City statistics, has reached 100 million mu, 1981 reached more than one hundred thirty million acres. In 1975, the National Health and Pest Control Society reported that there were 1001 units of Health Preventive Stations above the county level,