近年来,大螟在江苏沿江稻区发生越来越普遍,为害也逐年加重,大螟发生数量回升迅速,已由一个次要的偶发性害虫逐渐成为水稻上一个比较重要的害虫,亟需引起高度重视,切实强化预测预报和选择高效药剂加以有效控制,力争把大螟的发生危害控制在最低限度。一、大螟的发生规律、为害习性大螟属鳞翅目夜蛾科,多食性害虫。该虫在江苏省一年发 In recent years, the Sesamia in the Yangtze River in Jiangsu Province has become more common, damage has also increased year by year, the rapid rise in the number of Sesamia inferer, has been a secondary incidental insect pests gradually become a more important pests on rice, the urgent need to cause Attaches great importance to effectively strengthen the forecast and selection of efficient agents to be effectively controlled, and strive to control the occurrence of Sesamia in to a minimum. First, the occurrence of Sesamia internode, the habit of Sesamia is Lepidoptera noctuid, multi-feeding pests. The worm is made in Jiangsu Province in one year