摘要
通过５年多的系统测报，基本摸清了稻纵卷叶螟在黔西南１年发生４～５代，主要为害代三、四代。幼虫为害时期，二代５月下旬至６月上旬，三代６月中下旬至７月上旬，四代７月中下旬至８月上旬。发生区划为：重发生区（册亨、望谟及兴义、贞丰、安龙东南部），一般发生区（兴仁及兴义、贞丰、安龙的其余地区），轻微发生区（晴隆、普安）。气象条件和蛾迁入期、迁入量、适生环境等是影响发生程度的重要因素。
The occurrence regularity of rice leaf roller was known through systematic servey for Five years,there were 4-5 generations in a years.The third and forth of them were the major harming generation.The harming stage was from late ten days of May to first ten days of June for The second generation and late twenty days of June to first ten days of July for the third,and late twenty days of July to first ten days of August for the forth.It was divided into heavy occurrence region(Ceheng,Wangmou,Xingyi,Zhenfeng,and southeast of An- long),common region(Xing-ren,Xingyi,zhenfeng,other places of An-long),light region(Qinglong Pu-an ).Climate condition,immigration time and amount of the moth,subsistence environment were the major factors affecting the occurrence degree.
出处
《贵州农业科学》
CAS
1995年第4期24-27,共4页
Guizhou Agricultural Sciences
关键词
稻纵卷叶螟
发生规律
区划
黔西南州
水稻
害虫
rice leaf roller
occurrence regula
occurrence regionalization
affecting factor
Qianxinan
