长治市滨河公园草坪暗黑鳃金龟幼虫发生情况调查

Survey on the occurrence of Holotrichia purallela in turf and for suggestion in Changzhi riverside park

暗黑鳃金龟(Holotrichia purallela)的幼虫是为害当地草坪的主要害虫。采用田间调查和访问调查相结合的方法,调查了暗黑鳃金龟幼虫在不同生长期草坪中发生与分布情况。结果表明:在10月底,草坪暗黑鳃金龟幼虫的分布有一定的规律性。集中分布在0～5cm的浅土层;黄绿相间的草坪暗黑鳃金龟幼虫的发生数量最多,接近枯黄期的草坪暗黑鳃金龟幼虫发生数量次之,并且有死亡虫体出现,而绿色草坪暗黑鳃金龟幼虫的发生数量最少。秋季是防治暗黑鳃金龟幼虫的一个关键时期,把黄绿相间处草坪和接近枯黄期草坪作为重点区域。

The Holotrichia purallela are the extremely important pests in local turf. The occurrence and distribution of Holotrichia purallela in different turfs were surveyed through field survey and interview survey. The result indicated that the distribution of Holotrichia purallela showed a certain pattern at the end of October. They mainly occurred within 0 to 5 cm layer and the population in yellow-green turfs was the largest, followed by those yellow turfs and a number of death worm bodies appeared. In green turfs, the Holotrichia purallela population was the least. It could be concluded that autumn is the important control period and the key turfs were yellow-green and yellow in autumn.