摘要
通过对桂林地区水稻稻纵卷叶螟迁飞情况与气象条件的对比分析,对影响桂林地区稻纵卷叶螟迁入迁出的气象因素有了比较清楚的认识;天气形势决定了大气的环流,850 hPa气流是决定稻纵卷叶螟迁飞方向和速度的主导气流,华南地区一致的偏西南气流是稻纵卷叶螟北迁的主要载体;温度和水稻生长期是决定稻纵卷叶螟起飞的主要因子,降水和下沉气流决定了害虫的降落地点,适宜稻纵卷叶螟迁入桂林的地面温度为19-28℃,空气湿度为70%以上,稻纵卷叶螟降落高峰期当天和前1 d有降水的概率为85.8%。
By comparative analysis on meteorological conditions and occurrences of rice leaf roller during 2005 to 2009 in Guilin region,we have more clear understanding for meteorological elements affecting migration for rice leaf roller in Guilin;Atmospheric circulation decided by weather type,Airflow in 850hPa is the leading airflow that decided rice leaf roller moving direction and velocity.Consistently southwest airflow in the south of China is the main carrier for rice leaf roller that migrating to north.Temperature and rice grow period is the main factor for rice leaf roller lifted.Precipitation and sink airflow decided the injurious fall site.The temperature suitable for rice leaf roller to migrating is between 19-28℃,air humidity is above 70%,The probability of precipitation at the same day and last day of peek stage is large than 85.8%.
出处
《广东农业科学》
CAS
CSCD
北大核心
2011年第2期69-72,共4页
Guangdong Agricultural Sciences
基金
桂林市科技局攻关项目(20090709)
关键词
桂林地区
稻纵卷叶螟
迁飞
气象条件
Guilin region
rice leaf roller
migration
meteorological conditions
