灯光诱集白背飞虱种群的发生动态及变化规律

为得出白背飞虱灯下种群在惠水县的动态变化规律,更有效地进行白背飞虱的预报及防治。采用普通白炽灯灯诱法对惠水县白背飞虱进行诱集,根据近五年灯诱数据分析了该县白背飞虱灯下始见日、始盛日、高峰及末见日。结果表明:惠水县白背飞虱始见日为4月中、下旬,始盛日出现在4月下旬至5月上旬,末见日为8月中、下旬或9月下旬。始见日、末见日的早晚与各年气候差异有关;通过对贵州和邻近相关省份始见日、末见日的比较分析认为,惠水县为我国白背飞虱春夏随西南气流向北迁飞及秋末随偏北气流向南回迁的经由地,但回迁途中并不在惠水降落。

Analysis of Population Dynamics and Change Law of White-back Planthopper under Light

In order to know dynamic change law of white-back planthopper under light,provide effective occurrence and control countermeasure,the white-back planthopper was trapped by using ordinary incandescent from 2006 to 2010 in HuiShui County to analyze the first and last appearance dates,occurrence peak and initial out break dates of the pest.The results showed that its first appearance date was in the middle and late ten days of April and the initial outbreak date was in late April and the first ten days of May.The last appearance date was in the middle and late ten days of August or in the last ten days of September.The first and the last appearance dates of the white-back planthopper could advance or later due to the climate differences in different years.By comparing the first and the last appearance dates with that of related provinces,the result indicated that Huishui might be a key area for white-back planthopper migration from south to north in spring and summer with south-west airstreams and then from north to south in late autumn with northerly airstreams in China,but not a landing area in course of the latter.