美国科学家发现三种真菌能替代农药防治难以防治的梨树害虫一梨木虱。该真菌能侵染多种梨木虱和蚜虫。在室内试验，用水或油稀释这三种真菌进行喷雾，5天内杀死梨木虱的效果达100％。这三种真菌是Beauverla、Verticillium和Paecllomyces的一些种。以菌治虫@李济宸 American scientists found that three kinds of fungi can replace pesticide pest pest pears pear lice difficult to control. The fungus can infect a variety of pear psylla and aphids. In laboratory tests, these three fungi were diluted with water or oil and sprayed to kill 100% of pear psylla within 5 days. These three fungi are some species of Beauverla, Verticillium and Paecllomyces. To bacteria governance pests @ Li Jichen