【摘要】 杨四刺瘿螨Tetraspinus populi Kuang et Hong是杨树上发生的一种新害虫。调查显示,在不同的杨树品种上该螨的发生及危害程度不同。暖冬和少雨有利于该螨的发生。在2025品种上发生最重,2001品种上次之。1、2年树龄的杨树发生较重,3、4年树龄的发生较轻。更多还原

【Abstract】 The erophyid mite Tetraspinus populi Kuang et Hong is a new pest on Populus in Zaozhuang,Shandong Province of China.The survey indicated that occurrence and damage levels varied on different varieties of Populus and warm winter and lesser rainfall will favor its population growth.The heaviest infestation was occurred on Variety 2025 and next one was Variety 2001.It occurred more heavily on 1～2-year-old seeding than on 3～4-year-old young trees.更多还原