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就棉铃虫和烟青虫对寄主的选择和适应能力进行了研究。结果表明 :①烟青虫对食物的选择性比棉铃虫强 ,适应植物、获取营养的能力较弱 ,这可能是烟青虫的寄主范围较窄的原因之一②即使是昆虫的适食寄主 ,植物同样也能产生阻碍其消化和利用的化学物质
The host selection and adaptability of cotton bollworm and tobacco budworm were studied. The results showed that: (1) tobacco budworm is more selective for food than cotton bollworm and has a weaker ability of adapting to plant and gaining nutrition. This may be one of the reasons why the host of tobacco budworm is narrow. It also produces chemicals that hinder its digestion and utilization