水稻二化螟是近年来在黑龙江省水稻主产区新发生的害虫,现已造成较重的为害,并有逐年蔓延和加重的趋势,其主要发生区域为本省各水稻生产县。由于二化螟具有隐蔽性较强、早期为害不易被发现等特点,2007年黑龙江省植检植保站将此害虫列为重点防治对象,并提醒全省植保技术人员及稻农一 Rice stem borer (Sesamia inferens) is a newly emerged pest in the main paddy producing areas of Heilongjiang Province in recent years. It has now caused serious damage and has a tendency to spread and aggravate year by year. Its main occurrence area is all rice producing counties in the province. Because of its strong concealment of the stem borer, early damage is not easy to be found and so on, in 2007, Heilongjiang Plant Protection Plant Protection Station as the focus of this pest control object and remind the province’s plant protection technicians and rice farmers a