无公害农药自第二次世界大战结束以后，随着有机农药在全世界的广泛使用，生态环境日益受到污染和破坏，“破坏万能论”逐渐被“农药有害论”所取代。这种思潮促进了生物防治及生物农药的深入研究和迅速发展；对农药的研制提出了新的要求，迫使研究工作者研究出安全性较高... Pollution-free pesticides Since the end of World War II, with the widespread use of organic pesticides in the world, the ecological environment has been increasingly polluted and destroyed. The “destruction of the omnipotence theory” has gradually been replaced by “pesticide harmful theory.” This trend has promoted the further research and rapid development of biological control and biological pesticides, put forward new requirements for the research and development of pesticides, and forced the research workers to study the safety ...