三种重要甘薯害虫的生物学特性

三种重要甘薯害虫的生物学特性(10000字)
摘 要： 甘薯是我国重要的经济和粮食作物，对国家粮食安全和能源安全具有至关重要作用，而甘薯天蛾 （Herse convolvuli Linné）、甘薯麦蛾（Brachmia macroscopa Meyrick）、斜纹夜蛾（ Prodenia litura ( Fabricius)）这三种鳞翅目害虫对其危害严重。通过对这三种鳞翅目害虫的室内饲养，观察了其卵、幼虫、蛹及成虫的生长发育，详细记录了各龄期害虫 的长度、宽度、头宽、颜色变化等。同时观察其在自然状态下的形态特征和主要生物学特性，为甘薯害虫的防治提供必要的参考信息。
关键词：甘薯；甘薯天蛾；甘薯麦蛾；斜纹夜蛾； 生物学特性

Biological Characteristics Of Three Important Sweet-potato Pest
Abstract: Sweet potato is an important cash crop and grain crop in China, and plays a very important role in the national food security and energy security. However, the main lepidoptera may cause serious damage to sweet potato; Through the indoors feed of these three lepidoptera, this paper observes the growth changes of ovum, larva, pupa and adult, makes detailed record of lepidoptera at each age in the aspects of length, width, head breadth and color change. Meanwhile, this paper also observes their morphological characteristics and main biological characteristics under the natural state, and provides the necessary reference information for prevention and treatment of sweet potato insects. 　　Key words: sweet potato；Herse convolvuli Linné；Prodenia litura (Fabricins)；Brachmia macroscopa Meyrick；Biological Characteristics．

目  录
摘 要    1
关键词    1
1  前言    2
1.1  害虫分布范围及寄主    2
1.2  研究进展及为害    2
2  材料与方法    4
2.1  实验材料    4
2.2  试验方法    4
2.3  室内观察    4
3  结果与分析    5
3.1  甘薯天蛾    5
3.1.1  形态特征    5
3.1.2  生物学特性及发生规律    5
3.2  甘薯麦蛾    7
3.2.1  形态特征    7
3.2.2  生物学特性及发生规律    8
3.3  斜纹夜蛾    10
3.3.1  形态特征    10
3.3.2  生物学特性及发生规律    10
4、讨论    12
参考文献    13
致  谢    15