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蚧虫是农林业上一种重要的害虫,了解蚧虫生活史对于蚧虫的预测预报以及害虫防治有着十分重要的指导意义。仅由于蚧虫世代重叠,难于辨别世代顺序,且体被蜡质,不显昆虫特征,用肉眼只能看到体表的蚧壳,给生活史观察带来了很大困难,有时由于没有采用正确的方法以及缺乏实践经验,得出的结论往往有些偏差,不够准确。笔者在教学之余,带领林业班学生对竹秆红链蚧、卫予矢尖蚧、蠕须盾蚧、密竹链蚧进行了观察研究,积累了一些经验。现就如何观察蚧虫生活史作一介绍。
Aphids are an important pest in agriculture and forestry. Understanding the life history of aphids has important guiding significance for the prediction and prediction of aphids and pest control. Due to the overlap of locusts for generations, it is difficult to discern the generational order, and the body is waxy and invisible to insects. The husk of the body surface can only be seen with the naked eye. This has brought great difficulties to the observation of life history, and sometimes it has not been adopted. The correct method and lack of practical experience often lead to deviations and inaccuracies. In addition to the teaching, the author led the students in the forestry class to observe and study the bamboo culm red stalk, the scorpion scorpion, the shield worm, and the bamboo scorpion, and accumulated some experience. Here is an introduction to how to observe the life history of aphids.