冀西北坝上农牧交错带趋光性昆虫种群动态初研

采用频振式杀虫灯、频振式诱虫灯和小菜蛾性诱剂逐日诱集调查的方法,研究了坝上农牧交错带趋光性昆虫种群数量动态变化规律。结果表明,实验区农林牧趋光性昆虫共有269种,分属9目,42科。初步明确了该区趋光性昆虫种群动态可分为零星出现、连续少量出现、连续大量出现、短期大爆发4种类型,以及害虫优势种群(网锥额野螟、小菜蛾、杨逸色夜蛾、小地老虎、旋幽夜蛾、短扇舟蛾)的动态规律,为今后科学合理的害虫预测预报及害虫防治提供了基础资料。

Study on the Population Dynamics of Phototactic Insects in the Farming and Pastoral Interlock Belt of Northwest Hebei Province

The farming and pastoral interlock belt is situated in the northwest Hebei Province,which is a special agricultural ecozone.By means of black light lamp and diamondback moth sex pheromone luring and investigation,the population dynamics of phototactic insects in the farming and pastoral interlock belt of northwest Hebei Province have been studied for 82 days on end(from June 10th to August 30th in 2006).The results indicate that there are 269 kinds of insect species belonging to 9 orders,42 families in this region.Four types of the population dynamics of phototactic insect species could be identified as sporadic appearance,successive appearance with small amount,successive appearance with great number and explode in a short-term.The dominant species of pests include Loxostege sticticalis Linnaeus,Plutella maculipennis Curtis,Ipimorpha subtusa Schifferm-ller,Agrotis ypsilon Rottemberg,Scotogramma trifolii(Rottemberg),Clostera curtuloides Erschoff.By analyzing the proportions of different groups and Seasonal dynamic of dominance species,some scientific material for the system of predicting pests and preventing pests has been basically provided.