纵观生物农药的历史,许多生物农药都是在偶然的情况下被发现,最负盛名的B(t苏云金芽孢杆菌)就差点与我们失之交臂。日本明治维新之后,日本是最大的蚕丝产地和出产国。不过在19世纪和20世纪之交,一种叫做猝倒病的细菌性疾病袭击了该国的养蚕业。被感染的桑蚕突然就停止进食桑叶,随后出现颤抖的症状,很快侧倒死亡。这种病传染迅速,来势凶猛,几乎席卷了整个日本养蚕业。1901年,日本细菌学家石渡繁胤成功地分离出了“猝倒病”的病原体。在显微镜下,病原体细菌呈棒状,是一种杆菌。石渡将它命名为猝倒杆菌。不过石 Throughout the history of biopesticides, many biopesticides have been discovered by accident, and the most prestigious B (t) Bacillus thuringiensis has almost missed us. After the Meiji Restoration in Japan, Japan was the largest producer and producer of silk. However, at the turn of the nineteenth and twentieth centuries, a bacterial disease called damping-off disease attacked sericulture in the country. The infected silkworm suddenly stopped eating mulberry leaves, followed by trembling symptoms and soon died. The disease is contagious and fierce, almost sweeping the entire sericulture industry in Japan. In 1901, the Japanese bacteriologist Shigeru Fuso successfully isolated the pathogen “Dumping disease”. Under the microscope, the pathogen is rod-shaped and is a bacterium. Shihti named it Clostridium. But stone