橄榄木虱主要以若虫刺吸新梢嫩叶汁液，使叶片变小、变黄；虫口密度高时，叶片变畸形，还会诱发煤烟病，甚至可使几十年生的大树衰退及死亡。１　材料与方法１９９１～１９９３年在广州市郊罗岗等地４０～５０年生橄榄园各定５株树，按东、南、西、北各方取一枝梢，调查橄榄木 Olive psyllids nymphs shoot the tip of young shoots juice leaves, leaves smaller, yellow; insect population density is high, the leaves become deformed, but also induced sooty disease, and even decades of decay and death of trees decay . 1 Materials and methods 1991 to 1993 in the suburbs of Guangzhou Luogang 40 to 50-year-old olive garden set five trees, according to the east, south, west and north to take a shoot, to investigate the olive wood