今年在我区乌盟、巴盟及呼包二市等甜菜栽培区,发现一种新的甜菜害虫,经调查鉴定是三叶草夜蛾(也叫藜夜蛾、藜夜盗)。该害虫过去在我区也有零星发生,但为害不大,而今年突然大量发生,为害达十几个旗县,数量多,来势凶,为害期长。凡未及时防治的甜菜,大部分毁苗,严重影响 This year in our district Wu Union, Bameng and call the Second City beet cultivation area, found a new beet pests, the investigation identified as clover (also known as Qiangtang moth, thorn burglary). In the past, the pests also sporadically occurred in our district, but their harm was not great. This year, a large number of sudden occurrences took place, causing a dozen of counties and counties to have harmed their lives. Where did not timely control of beets, most destroyed seedlings, seriously affected