持续治理飞蝗灾害的新对策

该文通过对飞蝗Locusta migratoria为害特性的描述以及本世纪我国飞蝗防治历史的回顾，对各个时期的飞蝗治理策略的特点及不足进行了分析，并在总结我国近几年飞蝗生物治理理论研究与实践的基础上，提出了21世纪我国飞蝗生物治理的对策，即逐步扩大采用生物防治措施，增强如蝗虫微孢子虫生物防治制剂及天敌的控制作用，在飞蝗虫口密度中等或较低时，采用生物防治制剂为主，阻止或延缓中、低密度的飞蝗向高密度群居型的发展进程；在飞蝗虫口密度高时，可采用化防(昆虫生长调节剂等)与生防(如微孢子虫)配合使用，以迅速压低虫口密度，防治其迁飞为害，同时也可使蝗虫微孢子虫疾病长期流行于蝗群中，抑制飞蝗种群数量的增长。并积极探讨信息化合物对飞蝗行为的调控作用。

Some considerations on sustainable control overplague of locusts in China

This paper reviews the history of controlling the locust, Locust migratoria manilensis,in China this century and proposes new assumptions on how to sustainably manage the insect pest. In recent years,biological control of the locust has succeeded to some extent and this strategy had developed in certain areas of our country. In order to prevent or delay development of the locust from solitary phase to gregarious one the biological agents such as Nosema locustae should be used mainly.When high density occurs the IGRs or other chemicals and N.locustae must be used together at certain proportion to reduce the population rapidly,and the N.locustae disease may be epidemic in depressed locust populations in this case.The semiochemicals of locusts should be also studied and developed as one of potential measures for controlling the insect pest.