| 闫三强，吕宝乾，唐继洪，卢辉，唐雪，苏豪，向凯萍,2022,模拟降雨对草地贪夜蛾羽化出土的影响[J].环境昆虫学报,44(1):18-26 |
| 模拟降雨对草地贪夜蛾羽化出土的影响 |
| Influence of simulated rainfall on the emergence of Spodoptera frugiperda |
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| DOI： |
| 中文关键词: 草地贪夜蛾 模拟降雨 羽化出土 预测与防控 |
| 英文关键词:Spodoptera frugiperda simulated rainfall emergence prediction and control |
| 基金项目:国家重点研发计划（2019YFD03001）；国家重点研发计划（2021YFD1400702）；农业农村部财政项目（1630042020020） |
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| 中文摘要: |
| 为了探究降雨对草地贪夜蛾 Spodoptera frugiperda 羽化出土的影响，本试验在室内条件下模拟不同级别降雨，研究不同质地土壤在不同模拟降雨量下的水分状况对草地贪夜蛾土中蛹历期和羽化率的影响。结果表明：不同土壤相对含水量对于草地贪夜蛾土中蛹历期无显著性影响；蛹期模拟降雨处理对草地贪夜蛾蛹羽化率的影响显著，蛹期土壤相对含水量维持在40%~60%有利于草地贪夜蛾的羽化出土，土壤相对含水量过低（＜20%）和过高（＞80%）均极不利于草地贪夜蛾的羽化出土；砂壤土比砂土更适合草地贪夜蛾蛹羽化出土。此外，研究结果还表明，草地贪夜蛾在相对干旱的大田环境下暴发为害的可能性更大；适时进行大田漫灌，营造高湿土壤环境可有效降低草地贪夜蛾蛹的羽化率。本研究结果可为草地贪夜蛾灾变规律、预测预报和绿色防控研究提供理论依据。 |
| 英文摘要: |
| In order to explore the influence of rainfall on the eclosion of Spodoptera frugiperda, this experiment simulated different levels of rainfall under indoor conditions, and studied the effects of soil moisture conditions of different texture soils under different simulated rainfall on the pupal duration and emergence rate of S.frugiperda. The results showed that: Different relative water content of soil had no significant effect on the pupal duration of S. frugiperda; Simulated rainfall treatment had a significant impact on the emergence rate of S. frugiperda, and the relative soil moisture content maintained at 40%~60% was conducive to the emergence of S. frugiperda in pupal stage, low relative water content of soil (＜20%) and high relative water content of soil (＞80%) were extremely unfavorable to the emergence of S. frugiperda; Sandy loam was more suitable for emergence of S. frugiperda than sandy soil. The results showed that the outbreak of S. frugiperda was more likely to break out in the relatively dry field environment, and timely flooding irrigation in the field and creating a high wet soil environment can effectively reduce the emergence rate of the pupae of S. frugiperda. The results of this study can provide a theoretical basis for the outbreak mechanism, prediction and green prevention and control of S.frugiperda. |
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