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褐飞虱起飞的行为和日周期节律己于1978年作了观察。在春、夏季节,成虫通常于日出前或日落后出现起飞高峰,呈“晨、暮双峰起飞”型,晚秋由于温度下降。成虫一般于暖和的下午起飞,呈“日间单峰起飞”型。室外调查和室內试验表明,褐飞虱长翅雌虫于卵巢发育至Ⅰ级末、Ⅱ级初时迁移活动最盛。此时,雌虫翅的负荷小,含水量低,脂肪体发达,有利于起飞迁移。在施用保幼激素 ZR—619后,由于促进卵巢发育,增加翅的负荷等原因,其飞行活动明显下降。食料条件是影响褐飞虱迁移的重要因素。在黄熟水稻上取食的雌虫,其起飞迁移百分率比取食孕穗水稻的为高。由此表明,迁移的长翅型成虫在适宜的食料条件下可直接进入繁殖阶段。种群密度、温度对起飞前期有明显的影响,而光照周期的影响不明显。
The behavior of the Nilaparvata lugens (Sjobal) and its daily cycle rhythm were observed in 1978. In the spring and summer seasons, adults usually take off before sunrise or after sunset, showing a “morning and evening bimodal take-off” type and late fall due to temperature drop. Adults generally take off in a warm afternoon, showing a “day off” type. The outdoor investigation and laboratory tests showed that the longworm Nilaparvata lugens (WBNH) developed into ovariectomial stage Ⅰ, and the migratory activity of stage Ⅱ was the highest. At this point, the female wing of the small load, low water content, fat body developed, is conducive to take off and migrate. After administration of juvenile hormone ZR-619, its flight activity decreased significantly due to the promotion of ovarian development and increased loading of the wings. Foodstuff conditions are important factors affecting the migration of BPH. Females fed on yellow-ripened rice had higher percentages of take-off and migration than those fed on booting rice. This shows that the migrating winged adults can enter the breeding stage directly under the appropriate food conditions. Population density and temperature had a significant effect on the pre-departure period, while the effect of light period was not obvious.