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【目的】农作物间套作对害虫的影响很大程度上取决于害虫的行为反应,通过研究玉米/甘蔗套作系统中植物气味对亚洲玉米螟Ostrinia furnacalis(Guenee)行为的影响,将为利用化学生态手段防治套作田中的害虫提供依据。【方法】通过昆虫触角电位实验、成虫产卵和幼虫取食实验,测定了甘蔗、玉米植株及二氯甲烷漂洗物对亚洲玉米螟成虫产卵、幼虫取食的影响。【结果】亚洲玉米螟成虫在甘蔗植株上的落卵量(卵粒数、卵块数)与玉米植株差异不显著,取食甘蔗植株的幼虫数量显著低于玉米植株。亚洲玉米螟对甘蔗、玉米叶片漂洗物均可产生EAG反应,且在同一浓度下的反应值之间无显著差异。成虫产卵量(卵粒数、卵块数)在0.1 gE/mL浓度的甘蔗和玉米漂洗物间差异不显著;幼虫对经甘蔗叶片漂洗物处理过的饲料的相对取食率均低于65.00%,显著低于玉米漂洗物处理的饲料。【结论】甘蔗和玉米气味对亚洲玉米螟产卵的影响没有差异,但甘蔗气味会导致初孵幼虫表现出很强的逃逸行为。
【Objective】 The effects of crop intercropping on pests depend largely on the pest behavior. By studying the effects of plant odor on the behavior of Ostrinia furnacalis (Guenee) in maize / sugar cane intercropping system, Means for the prevention and control of pests in Tianzhong provide basis. 【Method】 The effects of sugarcane, corn plants and dichloromethane rinse on the oviposition and larval feeding of Asian corn borer were studied by the antennae test, the oviposition and larval feeding experiments. 【Result】 The results showed that the number of larvae of Asian corn borer larvae on sugarcane plants was not significantly different from that on maize plants (egg number and egg number). Asian corn borer can produce EAG response to sugarcane and corn leaf rinsing, and there is no significant difference between the response values at the same concentration. There was no significant difference in the fecundity (number of ova and eggs) of adult worms at the concentration of 0.1 gE / mL between sugarcane and corn rinses. The relative larval feeding rates of larvae fed on rinsed leaves of sugarcane leaves were less than 65.00% , Significantly lower than corn rinse-treated feed. 【Conclusion】 The effects of sugarcane and corn smell on the oviposition of Asian corn borer did not differ, but the odor of sugarcane caused the newly hatched larvae to show strong escape behavior.