上海地区糯玉米主要害虫发生与防治技术研究

Studies on the Occurrence and Control Techniques of Main Glutinous Corn Pests in Shanghai

对上海地区糯玉米主要害虫的发生规律与防治技术作了较为系统的研究,经2次药剂防治能有效控制玉米螟茎杆危害,防效以稻农500倍为最好,达89.09%,其次是杀虫双200倍,为83.63%;对夜蛾类害虫,防效以除尽1500倍为最好,药后3d即达100%,其次是保得2000倍,药后10d达90%。

A systematic study of occurring regularity and control techniques of main bests of glutinous corn in Shanghai was done. The results showed that the stem damage caused by Ostrinia furnacalis could be controlled by twice spraying an insecticide upon glutinous corn, the controlling rate was 89.09%when Daonong was diluted to 500 times for pesticide, followed by Dimehypo diluted to 200 times and with its controlling rate of 83.63%. Chujing was diluted to 1 500 times was the most effective in controlling Spodoptera pest, its control efficacy reached 100%in 3 days after application, and followed by Baode diluted to 2 000 times, which reached 90%in 10 days.