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今年江淮和黄淮麦区一代粘虫成虫数量高,东北大部和华北部分地区迁入量大,且东北多地见二代卵高峰,部分地区查见低龄幼虫,结合天气条件,预计二代粘虫总体偏重发生,东北局部地区会出现高密度集中为害,为害程度轻于重发的2012年和2013年,重于2014~2016年,全国发生面积3500万亩,幼虫发生盛期在6月下旬至7月上旬。一、江淮和黄淮麦区一代成虫数
This year, the number of adult armyworm moths in Jianghuai and Huanghuai areas is high. Most of northeastern China and some parts of North China moved in large quantities, and the second generation of egg peaks were found in many places in northeastern China. In some areas, young larvae were found. Combined with the weather conditions, In general, armyworm instability occurs in some areas in northeast China. Concentrations of high concentrations are concentrated in some areas in the northeast. The damage is less severe than in re-generation in 2012 and 2013, while in 2014-2016, there were 35 million mu of land in the entire country. The larvae peaked in June Late to early July. First, JAC and Huang Huai wheat area generation number of adults