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[目的]探讨稻水象甲的生态防控措施。[方法]通过在稻田生态食物链的环节中放养鸭子,研究了稻-鸭共生对稻田生态系统中稻水象甲成虫发生规律及其防控效果的影响。[结果]稻-鸭共生对稻水象甲具有显著的生物态控制效应,其中对稻水象甲成虫的防效达92.56%,对水稻白叶率的防效达98.15%,均优于化学防控效果。[结论]稻-鸭共生特别适合对如稻水象甲等繁殖力强、化学防治难度大的虫害,为生态控制稻水象甲提供了借鉴。
[Objective] The research aimed to explore the ecological control measures of rice water weevil. [Method] The effects of rice - duck symbiosis on the occurrence of rice watermelon adults and their control effects in paddy field ecosystem were studied by stocking ducks in the ecological food chain of rice fields. [Result] The rice - duck symbiosis had a significant biological control effect on M. graminearum, of which the control efficiency was 92.56% against adult rice water weevil and 98.15% against the white leaf rate of rice, both of which were better than those of chemical Prevention and control effect. [Conclusion] The rice - duck symbiosis was especially suitable for the pests such as Weevilsia graminicola, which had strong reproductive capacity and chemical control difficulty, and provided references for ecological control of rice water weevil.