论文部分内容阅读
研究表明，亳州烟区常见的烟草害虫有８科８种，害虫的天敌有５科５种，其中烟蚜、烟青虫和斑须蝽为主要害虫；烟蚜茧蜂是烟蚜的重要天敌，对控制烟蚜种群增长作用明显。烟田生物群落的多样性指数越大，稳定性指数亦越大；６月上旬田间生物群落的多样性、稳定性指数均为最高，是抵抗外界干扰能力和恢复原状态的最佳期。烟蚜是聚集分布时，烟蚜茧蜂、龟纹瓢虫等几种常见天敌在田间的水平分布格局也为聚集分布，从而提高了对害虫的综合控制作用，通过建立烟蚜、烟蚜茧蜂种群增长模型，揭示了其种群消长与时间变动的关系。
The results showed that there were 8 families and 8 species of common tobacco pests in tobacco area of Bozhou Region and 5 species and 5 species of natural enemies of pests. Among them, Aphis gossypii, The control of the population growth significantly affected aphids. The diversity index and the stability index of the tobacco community were higher with the higher diversity index. In early June, the diversity and stability index of the biome in the field were the highest, which was the best period to resist the external disturbance and restore the original status. When the aphids were aggregated and distributed, the horizontal distribution patterns of several common natural enemies, such as Aphidium avenae and Propylaea japonica, were also aggregated and distributed, thus improving the comprehensive control of pests. By establishing aphids, The bee population growth model reveals the relationship between population decline and time variation.