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通过对绿豆象室内生活史和习性的观察,发现绿豆象在北京室内1年可发生7代,以幼虫豆粒内越冬。越冬代幼虫于次年4下旬开始羽化,7月下旬到9月下旬是一年中发生的高峰期。室温与每代历期显著负相关(r=-0.988,P<0.01),室温下完成一代需22~44 d。室内药效试验表明啶虫咪质量浓度为0.005 g/L和功夫菊酯质量浓度为0.1 g/L药后7 d成虫校正死亡率无差异(P<0.05),分别在78%和94%以上。好年冬在质量浓度为0.2 g/L和0.1 g/L施药后5 d,成虫校正死亡率差异显著(P<0.05),分别达64.7%和100%。
Through the observation of mung bean’s indoor life history and habits, it was found that mung bean ascended in winter in 7 years in Beijing indoor for one year. The overwintering larvae begin to emerge in late April next year, and from late July to late September is the peak of the year. Room temperature was significantly and negatively correlated with each generation (r = -0.988, P <0.01), and reached 22-44 days at room temperature to complete the generation. The indoor efficacy test showed that there was no significant difference (P <0.05) in the adjusted mortality of adults at the concentration of 0.005 g / L and pyrethrin concentration of 0.1 g / L 7 d, respectively, at 78% and 94% . The adjusted mortality of adult was significantly different (P <0.05), reaching 64.7% and 100%, respectively, at the concentrations of 0.2 g / L and 5 g after 0.1 g / L spraying.