摘要
稻纵卷叶螟迁飞受到气象条件的影响,气象条件对稻纵卷叶螟的迁飞影响因子主要是高空气流、温度、降水和湿度;对近几年稻纵卷叶螟发生情况与对应的气象条件对比分析发现,925～850hPa高度层气流是决定稻纵卷叶螟迁飞方向和速度的主导气流;温度是决定稻纵卷叶螟起飞的主要因子,适宜稻纵卷叶螟迁飞的地面温度为19℃～28℃,降水和下沉气流影响到害虫的降落地点,稻纵卷叶螟降落高峰期当天和头天有降水的概率为85.8%,稻纵卷叶螟喜空气潮湿,不喜强光照,适宜的空气湿度为70%以上。
Rice leaf roller migration is main effected by meteorological condition.By analysis on the data,we had more clear understanding for meteorological elements affecting migration for rice leaf roller in Guilin;The main affecting factor for rice leaf roller was upper air flows,temperature,precipitation and humidity.By comparative analysis on meteorological conditions and occurrences of rice leaf roller in Guilin region;Airflow in 925 hPa to 850 hPa was the leading airflow that decided rice leaf roller moving direction and velocity..Temperature was the main factor for rice leaf roller lifted.The temperature suitable for rice leaf roller to migrating was between 19-28℃.Precipitation and sink airflow decided the injurious fall site.The probability of precipitation at the same day and last day of peek stage was large than 85.8%.The rice leaf roller prefered moist atmosphere,but disliked powerful sunshine.The suitable air humidity was above 70%.
出处
《中国农学通报》
CSCD
北大核心
2010年第21期262-267,共6页
Chinese Agricultural Science Bulletin
基金
广西桂林市科技局攻关项目(20090709)
关键词
稻纵卷叶螟
迁飞
气象条件
影响分析
rice leaf roller
migration
meteorological conditions
affecting analysis
