今年一代粘虫在江淮和黄淮麦区发生面积大,局部区域虫量高,经有效防治后各地残虫密度普遍较低;5月底始,河南、山东、河北部分监测点见蛾峰,华北和东北部分地区始见卵和低龄幼虫,累计诱蛾量和虫卵量明显低于前两年。结合天气条件和作物种植情况,预计今年二代粘虫总体为中等发生,山西大部、山东东部、内蒙古东北部、辽宁中西部、吉林西南部、黑龙江中南部等局部地区有重发可能,雨水丰沛地区管理粗放、低洼田块可出现高密度虫量集中危害现象;预计 This year’s generation of armyworms in Jianghuai and Huanghuai wheat area occurred in large area, the local area of ​​insect population is high, the effective control of the local population density is generally low; the end of May, Henan, Shandong, Hebei part of the monitoring point to see moth peak, North China And some parts of northeast China began to see eggs and young larvae, the cumulative number of trap moths and eggs was significantly lower than the previous two years. According to the weather conditions and planting conditions, it is estimated that armyworms of the second generation will generally occur moderately this year. Some areas such as most of Shanxi, eastern Shandong, northeastern Inner Mongolia, central and western Liaoning, southwestern Jilin and central south of Heilongjiang may have recurrences. Rainwater Extensive management of abundant areas, low-lying plots may appear high concentrations of insect population concentration hazards; expected