论文部分内容阅读
2012年草地螟在新疆阿勒泰、塔城地区偏重发生,局部农田出现暴发为害,为近年来发生最重的一年。为研究新疆草地螟发生规律,提高对草地螟预警能力,在总结2012年新疆草地螟发生面积大、见虫区域多、虫口密度高、为害程度重的基础上,分析认为本地主要虫源地越冬基数较大,北疆西北边境地区不排除有本地山区虫源或境外虫源的迁入以及气候、生态条件有利等是造成草地螟重发的原因。
2012 Meadow borers in Altay, Tacheng emphasis on local occurrence of outbreaks of farmland damage, the heaviest year in recent years. In order to study the law of occurrence of meadow moth and to improve the precautionary ability of meadow moth, based on the summary of the large area of meadow moth in Xinjiang in 2012, it is found that there are many insect areas, the population density is high and the degree of harm is heavy. The base is large. The northwestern border area of northern Xinjiang does not exclude the immigration of local mountainous or overseas insect sources and the favorable climate and ecological conditions, which are the causes of the recurrence of the meadow moth.