在室内15～20℃下模拟大突肩瓢虫Synonycha grandis的野外越冬环境,研究4种不同补充饲料对越冬期成虫的保种效果.结果表明:用蔗糖水+冷冻甘蔗粉角蚜饲喂,能显著提高瓢虫的越冬存活率,210d后存活率达67.5%,保种效果最好.且存活的成虫重新取食新鲜甘蔗粉角蚜后能快速恢复繁殖能力.5-6月在蔗田粉角蚜点状发生时,将室内保种存活大突肩瓢虫成虫按100头/667m2释放,30d后有蚜株率和有蚜叶片率分别由释放前的50.3%和45.0%降为0,与对照相比控蚜效果达100%.%Overwintering environment of Synonycha grandis (Thunberg) was simulated under the indoor temperature of 15-20℃. Conservation effects of 4 kinds of supplement feeds on the adult were tested. The result indicated that the best way to overwinter was to feed the adult sugar-in-water mixed with freezing Ceratovacuna lanigera (Zehntner) , the survivor rate could reach 67.5% after 210 d of conservation,propagating capacity of the survivors could be fast recovered after feeding of living C. lanigera. S. grandis was released with density of 100 ones/667 m~2 to sugarcane field during May to June when harmful C. lanigera broke out, which could effectively reduce the harm. Percentages of plants with aphid and leaves with aphid reduced from 50.3 % and 45 % to 0 respectively after 30 days' release. The control effect on C. lanigera reach 100% compared with constrast.
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