宁虫素对蔬菜、水稻害虫的毒力及药效特性研究

The toxicity and effectiveness of Ningchongsu against the pests of vegetable and rice

本文研究了复方生物农药宁虫素对蔬菜、水稻害虫的毒力及药效特性 ,结果表明 ,该药集速效性、持效性于一体 ,对蚜虫、褐飞虱的毒力分别为 :0 .6 3ppm和 2 .0 0 ppm。田间试验表明 ,宁虫素可有效地控制蔬菜蚜虫、小菜蛾、菜青虫、稻飞虱等的危害 ,防效显著。田间使用宁虫素后 ,平均蛛虱比明显优于噻嗪酮和吡虫啉 ,生态安全性好。

The toxicity and effectiveness of Ningchongsu against the pests of vegetable and rice were studied. The results indicated that this insecticide had quick and sustained effect. The LC 50 for this insecticide to Lipaphis erysimi (Kaltenbach) and Nilaparvata Lugens Stal were 0.63ppm and 2.00ppm, respectively. Field experiment showed the significant effectiveness of Ningchongsu had be obtained against L. erysimi (Kaltenbach), Plutella xylostella (Linnaeus) , Artogein rapae (Linnaeus) and N. Lugens . After applied in the rice field,this insecticide was safer to spider than imidacloprid and buprofezin.