食料对棉铃虫种群增长的影响及虫源性质分析  

RELATIONSHIPS BETWEEN HOST FOODS AND COTTON BOLLWORM AND POPULATION CHARACTERISTICS ON THE COTTON FIELD

作　　者：杨益众[1] 庞雄飞[2] 梁广文[2] 戴志一[1] 黄东林[1] 

机构地区：[1]扬州大学农学院植物保护系,江苏扬州225009 [2]华南农业大学昆虫生态研究室,广东广州510642

出　　处：《扬州大学学报（农业与生命科学版）》2003年第2期59-63,共5页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：江苏省"十五"科技攻关项目(BE2001342)

摘　　要：在27.6℃的恒温条件下,应用昆虫种群趋势指数模型,研究豌豆、大豆、棉花等8种天然食料对棉铃虫各虫态发育进度和种群增长的影响。结果表明:取食豌豆叶的棉铃虫发育进度最快,取食棉花的最慢,指数值的大小依次为豌豆>大豆>玉米>高粱>棉花>花生>茄子;棉铃虫在长江下游小麦作物上不能很好地生长发育,棉田第2代棉铃虫虫源主要来自非小麦作物田。The relationships between the main host foods and population increase on cotton bollworm Helicoverpa armigera Hubner were investigated by the way of population life\|table and model of index (I). The pupal weight was heavier and there were more eggs laid per female by feeding with leaf of pea and soybean than feeding with the fruits of eggplant and the leaf of peanut. The development rate of larvae was highest feeding with pea leaf, second for corn fruits, lowest for cotton leaf, flower, bud and boll. The sequence was pea>soybean>corn> Chinese sorghum>cotton>peanut>eggplant according to values of index of population trend (I). The reasons that cotton bollworm could not develop whole a generation on the wheat field and population characteristics on the cotton field was analyzed.

关 键 词：棉铃虫 寄主 发育进度 种群生命表 

分 类 号：S435.622[农业科学—农业昆虫与害虫防治]