几种药剂对4种林业害虫的防治效果比较

Prevention and control effects of different pesticides on 4 forest pests

为有效防治茶尺蛾Ectropis oblique hypulina,樟巢螟Orthaga achatina,杨小舟蛾Micromelalopha troglodyta和褐边绿刺蛾Latoia consocia对上海市崇明县林木的危害,通过喷雾法和浸叶法对这几种害虫进行多种生物和化学药效试验。结果表明,生物农药对害虫的防治效果没有化学农药迅速,但随时间推移,也具有良好的防治效果;生长调节剂250g·kg-1灭幼脲3号是防治茶尺蛾和樟巢螟的理想药剂;生物制剂10g·kg-1阿维菌素、200g·kg-1除虫脲悬浮剂分别对杨小舟蛾和褐边绿刺蛾具有很好的防治效果。通过试验,筛选出250g·kg-1灭幼脲3号悬浮剂、苏云金杆菌悬浮剂、10g·kg-1阿维菌素、200g·kg-1除虫脲悬浮剂和50g·kg-1抑太保乳油等5种高效低毒低残留且适合崇明林木虫害防治的生物农药。

Abstract： The prevention and control effects of biological and chemical pesticides were studied using the spray and leaf dipping methods to effectively prevent and control Ectropis oblique hypulina, Orthaga achatina, Micromelalopha troglodyte and Latoia consocia in the forests of Chongming County. The results showed that the prevention and control effects of biological pesticides were slower than but as good as that of chemical pesticides. 250 g·kg^-1 benzoylphenal urea Ⅲ were ideal pesticides for Ectropis oblique hypulina and Orthaga achatina. 10 g·kg^-1 avermectin and 200 g·kg^-1 diflubenzuron had very good prevention and control effects on Micromelalopha troglodyte and Latoia consocia respectively. Through this research, we selected 5 new biological pesticides for the forestry of Chongming County, namely, 250g·kg^-1 benzoylphenal urea Ⅲ, Bt suspension concentrate, 10 g·kg^-1 avermectin, 200 g·kg^-1 diflubenzuron and 50 g·kg^-1 chlorfluazuron EC, which were of high efficiency, low toxicity and low residues.