【摘要】 烟青虫(Helicoverpaassulta)是一种世界性害虫,严重危害烟草的生长和烟叶的品质。烟青虫的发生受寄主、温湿度、日照长度的影响较大;烟青虫的农业防治、生物防治、化学防治的方法以及药用植物的应用得到了阐述。更多还原

【Abstract】 Helicoverpa assulta that is a sort of international pest endanger the growth and the quality of tobacco. It ′s occurrence is affected by host and temperature and humidity and length of sunlight. It ′s means of prevention and cure of agriculture and biology and chemistry are expounded. Synchronously, the appliance of officinal plant is expounded, too.更多还原