杀蝗绿僵菌油剂防治黄河滩区东亚飞蝗效果研究初报

通过2003-2005年在河南黄河滩区进行的生物农药防治东亚飞蝗药效试验结果表明，20％杀蝗绿僵菌ULV对东亚飞蝗具有良好的防治效果，400-500ml／hm^2药后15d的平均校正防效达98％以上，与对照药剂0．4％锐劲特（Regent）ULV和75％马拉硫磷（Malathin）ULV1500ml／hm^2个处理的防效相当。且对田间主要天敌蜘蛛、步甲、蚂蚁等影响很小，对生态环境无毒副作用，符合环保和蝗区生物多样性的要求，具有广阔的推广应用前景。

Effect & Analysis of Metarhizium Anisopliae ULV Eliminating Locusta migratoria manilensis Meyen in Yellow-River Beach Area

By the combination of literature search and field survey ,the current situation of plant diseases'' prevention and cure in the course of traditional production has been studied. In the study, it is mainly aiming at the 5 kinds of grain in Shanxi Province, that is, millet, broom corn millet, buckwheat, hulless oat and mung bean. The result showns that 23 kinds of disease were found in these 5 kinds of quality sundry grain. While,forbidden pesticide for green food production was applied in 6 kinds of these diseases prevention,most disease prevention and cure take chemistry measures. In order to conform to the requirements for the green food production, it is put forward that to strengthen the agricultural prevention, take physical prevention in priority, call for biological prevention and use chemical prevention cleverly. In the meantime, it is suggested that to update the relevant teaching materials and monographs for disease prevention.