关键词: 韭菜迟眼蕈蚊, 成虫, 幼虫, 种群动态, 温度

Abstract: Bradysia odoriphaga is one of the most important insect pests of Chinese chives. In order to provide a theoretical basis for the prevention and control of Bradysia odoriphaga, we investigated anniversary dynamic of Bradysia odoriphaga in three cultivation model, such as solar greenhouse, plastic greenhouse and open. We investigated the annual population dynamics of Bradysia odoriphaga and analyzed the relationship between Bradysia odoriphaga population quantity and temperature, combined with temperature data. The results showed that there were three population peaks in spring, autumn and winter in solar greenhouse and open, respectively, and one corresponding lower amounts in summer; there were two population peaks in spring and autumn in plastic greenhouse, respectively, and two corresponding lower amounts in summer and winter. The lower population size in summer occurred in high temperature period. High-instar larva were dominant in the overwintering population of Bradysia odoriphaga. Analysis of correlation between population size and temperature showed that temperature was one of the key factors which decided Bradysia odoriphaga population numbers, and high temperature had significant inhibition effect on population growth.

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