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为评价黑眶蟾蜍对烟草害虫的控制效果,比较了黑眶蟾蜍的食性与普洱烟区主要害虫之间的相似性,统计了试验烟田害虫种类、数量、土壤和烟叶的农药及重金属残留,用独立样本t检测分析发现,烟田主要害虫都在黑眶蟾蜍的捕食范围之内,试验地当年害虫主要为斜纹夜蛾和豆天蛾。未养殖黑眶蟾蜍(对照)与养殖黑眶蟾蜍的烟田中(处理)斜纹夜蛾虫口密度分别为1.39和0.09只/m~2,豆天蛾为0.41和0.09只/m~2,土壤中砷为117.45和10.30 mg/kg,镉为2.34和0.37 mg/kg,处理均显著低于对照烟田,试验地烟草发病较轻。说明可利用黑眶蟾蜍的捕食性建立生态烟田。
To evaluate the control effect of Bufo bufo gargarizans on tobacco pests, the similarities between the feeding habits of Bufo gargarizans and the main pests in Pu’er tobacco area were compared. The types and quantities of pests in tobacco fields, pesticide and heavy metal residues in soils and tobacco leaves, The results of independent sample t test showed that the main pests in tobacco fields were within the prey of black-toed Bufo bufo gargarizans. The population density of S. litura in untreated Black Orbital Bufo bufo gargarizans (Control) and Breeding Orbital Bufo bufo gargarizans were 1.39 and 0.09 / m 2, respectively, and 0.41 and 0.09 / m 2 in Landrace moth Arsenic was 117.45 and 10.30 mg / kg, cadmium was 2.34 and 0.37 mg / kg, the treatment was significantly lower than the control tobacco fields, the tobacco was less susceptible to the test. It shows that the predatory habit of black-toed Bufo bufo gargarizans can be established.