Observation on Behavior of Chilades pandava

Chilades pandava is a dangerous insect pest of Cycas spp.,which seriously threatens the growth and development of Cycas plants.On the basis of previous studies,the paper summarized the behaviors of different insect states of C.pandava,such as feeding,flying,resting,mating,spawning,hatching,pupation,eclosion,etc.,in order to provide a reference for effective prevention and control of C.pandava.

Occurrence and Prevention and Control Progresses of Chilades pandava in Cycas spp.

The occurrence and comprehensive prevention and control progresses of Chilades pandava in Cycas spp. are summarized from the aspects of classification and geographic distribution, ecological characteristics, damage and development rules, and comprehensive prevention and control technology, in order to provide a reference for further prevention and control against C. pandava in Cycas spp.

九种杀虫剂防治苏铁小灰蝶的药效试验

为了筛选控制苏铁小灰蝶(Chilades pandava)的有效药剂,通过室内毒力测定和田间药效试验研究9种杀虫剂对苏铁小灰蝶的防治效果。结果表明,48%毒死蜱乳油1 000倍液、90%晶体敌百虫1 000倍液、2%甲维盐(甲氨基阿维菌素苯甲酸盐)微乳剂1 500倍液和20%康宽(氯虫苯甲酰胺)悬浮剂3 000倍液室内施药后72 h对苏铁小灰蝶3龄幼虫的校正死亡率分别达到100.00%、95.00%、93.35%、100.00%,田间施药后1、3、7 d,4种杀虫剂对苏铁小灰蝶的虫口减退率和田间防治效果均在90%以上。其次是2.5%功夫(高效氯氟氰菊酯)微乳剂3 000倍液、2.5%劲彪(高效氯氟氰菊酯)乳油3 000倍液、1.8%阿维菌素乳油1 000倍液、10%除尽(虫螨腈)悬浮剂1 500倍液也表现出良好的杀虫效果,室内施药后72 h,4种杀虫剂对苏铁小灰蝶3龄幼虫的校正死亡率分别达88.35%、80.00%、88.35%、85.00%;田间施药后3、7 d,4种杀虫剂对苏铁小灰蝶的虫口减退率和防治效果均达80%以上;2.5%敌杀死(溴氰菊酯)乳油杀虫效果最差,室内施药后72 h,对苏铁小灰蝶3龄幼虫的校正死亡率为78.35%,田间施药后1、3、7 d,对苏铁小灰蝶的虫口减退率和防治效果均在70%以下。