论文部分内容阅读
秋季是保护地蔬菜定植、幼苗期,该阶段菜苗娇嫩,易受害虫为害。秋季保护地蔬菜为害较重的害虫主要有烟粉虱、蓟马、斑潜蝇等。此类害虫具有寄主范围广、繁殖速度快、世代重叠重、对化学农药容易产生抗性等特点,因而必须采取综合治理措施,以保障蔬菜健康成长。一、形态特征烟粉虱属同翅目、粉虱科。该害虫俗称小白蛾,成虫体长1mm左右,翅展2mm左右,虫体淡黄白色到白色,翅白色无斑点,被有蜡粉;停息时左右翅合拢呈屋脊状。若虫椭圆形,有触角和足,
Autumn is the protection of vegetable colonization, seedling stage, this stage delicate seedlings, susceptible to pests. Vegetable pests protected in the fall protected areas are the major pests whitefly, thrips, leafminers and so on. Such pests have the characteristics of a wide range of hosts, rapid propagation, overlapping generations, resistance to chemical pesticides and other characteristics, and therefore must take comprehensive measures to ensure the healthy growth of vegetables. First, the morphological characteristics of Bemisia Homoptera, whitefly Division. The pest commonly known as small white moths, adult body length of about 1mm, wingspan 2mm or so, body yellowish white to white, white wings without spots, was waxy; resting around the wing was ridge. Nymphs oval, tentacles and feet,