提高农作物产量的一个重要途径是防治病虫害。至今所发展的大量有机合成农药对农业生产起过很大的作用,但由于其本身的安全性、抗药性等问题的存在,目前使用受到一定的限制。同这些化学农药的发展不同,人们从古时候就开始在了解昆虫因病害或寄生致死的基础上,进行喷洒或释放能使昆虫染病的病菌、寄生虫或天敌等防治害虫的研究。近年来由于生物技术的发展,再次兴起了进行有用生物的研究工作,这就是所谓“生防农药”或“生物农药”。生物农药是一种广义的说法,它可以包括生防农药和生物化学农药。而所谓生防农药就是直接利用活的生物体作为农药。根据其应用的生物不同,可细分为病毒、细菌、真 An important way to increase crop yields is to control pests and diseases. So far, a large number of organic synthetic pesticides have played a great role in agricultural production, but due to their own safety, drug resistance and other problems, the current use of certain restrictions. Different from the development of these chemical pesticides, people from the ancient time began to understand the insects on the basis of disease or parasitic lethal spray or release can make the insect disease, parasites or natural enemies and other pest control research. In recent years, due to the development of biotechnology, research work on useful organisms has once again emerged. This is called “pest control pesticide” or “biological pesticide.” Biopesticide is a broad term that can include biopesticides and biochemical pesticides. The so-called biological pesticides is the direct use of living organisms as pesticides. According to the different biological applications, can be broken down into viruses, bacteria, really