关键词: 枇杷, 食叶害虫, 枇杷黄毛虫, 药效试验

Abstract: The investigation showed that among the 24 species of loquat leaf-eating pests, the most severe insect pests were Melanographia flexilineata and Phalera flavescens, followed by Thosea sinensis and Porthesia scintillans.The Melanographia flexilineata occurs 5 generations a year, and the first generation of larvae appeared in early May, which has the largest population.In this study, Abamectin, Acetamiprid and Fipronil were used to do indoor efficacy tests on Melanographia flexilineata.The results showed that 2% Abamectin diluted to 2 000 times, 3% Acetamiprid diluted to 1 000 times and 5% Fipronil diluted to 2 000 times had the best controlling effects.

Key words: loquat, defoliating insects, Melanographia flexilineata, efficacy trials