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随着种植业结构的改变,气候条件和管理方式的变化,最近几年农业生产中病虫害呈现明显的变化特点,老病虫回升,新病虫出现,其中斑大蚊就是河北省2005年被发现和确定的新害虫。目前在河北省多个县市均有发生,而且发生程度逐年加重,对农作物的生长、发育造成了巨大危害。笔者就此虫的发生情况、形态特征、发生规律及防治方法简述如下。一、发生情况2005年4月7日东光县植保站调查,在棉田播种前浇水洇地后发现该虫,同期南宫县也发现
With the changes of planting structure, climate conditions and management changes, pests and diseases in agriculture have shown obvious changes in recent years, the old pests rebounded, new pests and diseases appeared, of which spotted mosquito was discovered in 2005 in Hebei Province And identify new pests. Currently in many counties and cities in Hebei Province have occurred, but the degree of increase year by year, the crop growth and development has caused tremendous damage. The author of this pest occurrence, morphological characteristics, occurrence and prevention methods are summarized below. First, the occurrence of April 7, 2005 Dongguang Plant Protection Station survey, before sowing in the cotton field and found that the worm, the same period Nangong also found