在我市郊区、县为害玉米的钻心虫,主要是玉米螟和高粱条螟,其次还有少数的粟灰螟。它们不仅为害玉米,同时也为害高粱,夏播作物比春播作物受害更为严重。钻心虫的食性很杂,可以为害20多种作物,如禾谷类、棉花、豆类以及多种杂草,是一种多食性害虫。在一般年份,玉米受钻心虫为害后可减产10％以上,在大发生年份甚至可减产30—60％以上。 In the suburbs of our county, corn borers harm corn, mainly corn borer and sorghum striped borer, followed by a handful of millet borer. They not only harm corn, but also damage sorghum, summer sowing crops harder than the spring sowing crops. Bored worms diet is very complex, can damage more than 20 kinds of crops, such as cereals, cotton, beans and a variety of weeds, is a multi-feeding pests. In normal years, corn can be cut by more than 10% after being damaged by diamond worms, and even more than 30-60% can be cut in the year when large-scale occurrences occur.