作　　者： ; ; (黎坚）;

机构地区： 华南农业大学

出　　处： 《华中农业大学学报》 2003年第3期228-231,共4页

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

领　　域： [农业科学] [农业科学]