【摘要】 室内研究了温度为18℃,25℃,32℃条件下B型烟粉虱成虫在一品红上的垂直分布规律。结果表明,一品红上的B型烟粉虱成虫主要群集在叶背,在叶层上的分布总体呈现数量下层>中层>上层,而且B型烟粉虱成虫发生数量与叶位之间具有显著相关性,发生数量主要集中在倒3叶至倒12叶之间;随着温度的升高,B型烟粉虱成虫发生量逐渐向下部叶转移。在全球气候变暖的背景下,本研究结果为花卉上B型烟粉虱的监测与防控提供参考依据。更多还原

【Abstract】 The vertical distribution law of Bemisia tabaci B-biotype adults on Euphorbia pulcherrima under temperatures of 18℃,25℃ and 32℃ was studied in laboratory.The results showed that B.tabaci adults mainly clustered on the leaf back of E.pulcherrima,and the numbers of B.tabaci adult on the different leaf layers were significantly different,with the sequence of lower leaves>middle leaves>upper leaves.Furthermore,there was significant correlation between E.pulcherrima leaf-position and B.tabaci adult numbers,and B.tabaci adults mainly clustered between top third leaf and top twelfth leaf.With the increasing of temperature,the occurrence quantity of B.tabaci adult moved to under-part leaves gradually.Under the background of global warming,the results could provide reference basis for the monitor and control of B.tabaci on flowers.更多还原