西花蓟马成虫在日光温室内的分布和日活动规律

Distribution and daily activity of adult western flower thrips [Frankliniella occidentalis (Pergande)] under solar greenhouse condition

利用蓝色粘虫板在山东省青州市高柳镇日光温室内研究了西花蓟马(Frankliniella occidentalis)成虫在2009年3月下旬茄子植株上的分布和日活动规律。结果表明,西花蓟马成虫数量在日光温室内由北向南依次减少,北边平均每日诱集量为65.3头·组-1,中间为40.0头·组-1,南边为20.4头·组-1,南北蓝板每日平均诱集量间存在显著差异。日光温室内东西方向上西花蓟马成虫分布表现为由中间向东西两边逐渐增多。在垂直方向上,西花蓟马成虫在茄子所有叶片上均有分布。蓝板对西花蓟马成虫的诱集量从7:00开始逐渐增多到15:00达到最大值,而后逐渐减少,每天有1个活动高峰。另外,蓝板南面(330.6头·d-1)诱集量显著高于北面(242.2头·d-1),东面(343.8头·d-1)显著高于西面(208.0头·d-1)。

The distribution and daily activities of adult western flower thrips on eggplants under solar greenhouse condition were investigated in late March 2009. The thrips were surveyed using blue sticky traps. Results show that the number of adult western flower thrips caught in the solar greenhouse gradually decreases from north to south. The average catch in the north is 65.3 adults per group of blue sticky traps, that in the middle is 40.0 adults per group of blue sticky traps, and that in the south is 20.4 adults per group of blue sticky traps. Daily average catch differs significantly between the south and north. From west to east, the catch in the middle is less than those in the east and west. Vertically, adult western flower thrips are found on all the leaves of the eggplants. The adults caught by the blue sticky traps gradually increase from 7：00 am to 15：00 pm, then gradually decrease - indicating a single daily peak of activity. Generally, the traps facing south catch significantly more adult western flower thrips （330.6 adults per day） than the ones facing north （242.2 adults per day）. Similarly, the traps facing east catch significantly more adults （343.8 adults per day） than the ones facing west （208.0 adults per day）.