晚稻田白背飞虱和褐飞虱的发生动态  

Dynamics of the Population of Whitebacked Planthoppers and Brown Planthoppers in Late Rice Fields

作　　者：陆永跃[1] 黎坚 梁广文1 

机构地区：[1]华南农业大学昆虫生态研究室,广州510642 [2]广东省肇庆市病虫测报站,肇庆526060

出　　处：《华中农业大学学报》2003年第3期228-231,共4页Journal of Huazhong Agricultural University

基　　金：国家 973项目子专题 (C2 0 0 0 162 0 9)

摘　　要：经过连续 3a的田间系统调查 ,结果表明 :广东省双季晚稻田稻飞虱田间种群消长曲线基本上为双峰型 ,发生盛期从 9月中旬到 10月上中旬 ;近年来稻飞虱混合种群中白背飞虱发生数量比率增大 ,在混合种群的发生趋势中起主导作用 ;稻飞虱混合种群与白背飞虱发生年度间表现为每 6a出现 1个高峰。The population dynamics of the whitebacked planthoppers Sagatella furcifera (Horvath) and the brown planthoppers Nilaparvata lugens (Stl) in late rice fields were systematically investigated in Zhaoqing City, Guangdong Province. The research results showed that the population of those two insect pests reached 2 peaks,respectively at middle Sepetember and early and middly October.The population of the whitebacked planthoppers greatly increased in recent years. The population of whitebacked planthoppers and as a result,the total population of the planthoppers reaches a peak every 6 years. The dynamics of the total population of the planthoppers were different on different rice varieties.

关 键 词：晚稻田 白背飞虱 褐飞虱 发生动态 田间种群 消长曲线 发生数量 

分 类 号：S435.112.3[农业科学—农业昆虫与害虫防治]