论文部分内容阅读
白粉虱是最让菜农头疼的虫害之一,为害甚广,防治效果差,这些年尽管菜农在大棚上下都用上防虫网,但仍然难以阻挡它们的侵害。要想全面防治,必须首先了解白粉虱的生活习性,防治措施才能行之有效。形态特征:温室白粉虱的生命周期可分为四个阶段:卵、幼虫、蛹、成虫,其形成时间为:白粉虱一年可生产9～10代,一代30天左右,一次可产卵100粒。卵为黄褐
Whitefly is one of the most troublesome pests for farmers. It is very harmful and has a poor control effect. In these years, even though farmers use insect-proof nets in greenhouses, it is still hard to stop them from infringement. To comprehensive prevention and control, we must first understand the life habits of whiteflies, prevention and control measures can be effective. Morphological characteristics: Greenhouse whitefly life cycle can be divided into four stages: eggs, larvae, pupae, adults, the formation time: whiteflies can produce 9 to 10 generations a year, a generation of about 30 days, an egg can be 100 grain. The egg is yellowish brown