米乐尔防治韭菜地蛆近几年，我市保护地韭菜面积迅速扩大，１９９６年达２．５万亩。由于地蛆为害严重，造成大量死苗而减产。一般发生田块虫口密度每平方米２５—３０头，减产３５％以上。常见的地蛆种类有迟眼蕈蚊、葱蝇两种。以前农户往往使用剧毒农药灌根，结果韭菜上... Miller prevention leeks maggots in recent years, the rapid expansion of the city’s protected leeks area in 1996 up to 25,000 mu. Due to the maggot serious damage, resulting in a large number of dead seedlings and cut. In general, field pest population density of 25-30 per square meter, cut 35% or more. Maggot species are common maggot mosquitoes, onion fly two. Before farmers often use highly toxic pesticides irrigation root, the results of leeks on the ...