高梁、玉米、谷子是我县主栽粮食作物,近几年又发展了冬小麦.历年种植面积都在55~56万亩左右,约占整个粮谷作物面积的90%,粘虫是这些作物的大敌.解放以来,在我县几乎每二、三年大发生一次,给农业生产造成很大损失.一、粘虫在我县发生的规律及其活动特点粘虫在我县发生分布情况,以东部沿海平原区发生的早且重,西部山区发生的晚且轻, Sorghum, corn and millet are the main grain crops in our county, and the winter wheat has also developed in recent years. Over the years, the planting area is between 55 and 56 mu, accounting for about 90% of the entire cereal crop area. Enemy. Since the liberation, almost every two or three years in our county occurred once, resulting in great loss of agricultural production. First, the occurrence of armyworm in my county and the characteristics of the activities of Mythimna occur in my county distribution, Occurred in the eastern coastal plain early and heavy, occurred in the western mountainous late and light,