【摘 要】
：
灰同缘小叶蝉Coloana cinerea Dworakowska是秋枫(Bischofia javanica)上的重要害虫,经常导致秋枫叶片枯黄,乃至大量落叶,严重影响其正常生长和降低景观效果.本文通过在秋枫下悬挂18种颜色的90块粘虫板诱捕灰同缘小叶蝉,定时调查18种不同颜色粘虫板对灰同缘小叶蝉成虫的诱捕数量,了解其成虫对不同颜色的趋性差异.通过连续24小时查数秋枫树周围悬挂的粘虫板上的捕虫数
【机 构】
：
华南农业大学林学与风景园林学院,广东广州510642
论文部分内容阅读
灰同缘小叶蝉Coloana cinerea Dworakowska是秋枫(Bischofia javanica)上的重要害虫,经常导致秋枫叶片枯黄,乃至大量落叶,严重影响其正常生长和降低景观效果.本文通过在秋枫下悬挂18种颜色的90块粘虫板诱捕灰同缘小叶蝉,定时调查18种不同颜色粘虫板对灰同缘小叶蝉成虫的诱捕数量,了解其成虫对不同颜色的趋性差异.通过连续24小时查数秋枫树周围悬挂的粘虫板上的捕虫数量(每小时调查1次),观察灰同缘小叶蝉成虫在秋枫上的活动规律和扩散动态.通过调查悬挂在不同位置的粘虫板上粘虫数量,了解其成虫向周围扩散飞行的活动范围.研究结果表明：(1)不同颜色粘虫板捕虫数量差异显著.其中,黄绿色、橘黄色、棕色三种粘虫板对灰同缘小叶蝉的诱捕数量最多,显著高于其他各种颜色粘虫板,黑色、橙色、黄色和红色粘虫板诱捕虫量次之,绿色系列及蓝色系列粘虫板诱捕虫量较少,尤以紫色和灰色粘虫板诱到的数量最少.(2)灰同缘小叶蝉成虫在一天当中有明显的飞行活动高峰.一般在18点左右开始飞行活动,凌晨2点后飞行活动显著增多,4点达到顶峰.6点之后到18点之间几乎没有飞行活动.这个结果说明灰同缘小叶蝉成虫在黄昏开始,飞行扩散活动多集中在夜间进行.(3)粘虫板粘捕灰同缘小叶蝉成虫数量随距离秋枫变远而逐渐减小,在秋枫周围50 cm左右时,诱捕量超过20只.当距离秋枫3.5m远时,粘虫板上粘捕量多为0,偶有1～2只.
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