1994年黑刺粉虱传入日照市。近几年来 ,黑刺粉虱已在该市茶园中普遍发生 ,并上升成为危害茶树的主要害虫。1　黑刺粉虱大发生的原因1 .1　气候因素　 70、80年代 ,日照市冬季气温较低 ,茶树经常遭受冻害 ,仅 1 976年至1 983年 ,就发生了三次大冻害 ,冬季低温抑制了黑刺粉虱的发 Blackfly whitefly was introduced to Rizhao in 1994. In recent years, blackthorn whiteflies have been common in the city’s tea plantations, and rose to become a major pest endanger tea trees. 1 black twig large occurrence of reasons 1 .1 climatic factors in the 1970s and 80s, Rizhao City, low winter temperatures, tea trees often suffer from frost damage, only from 1976 to 1983, there were three major frost damage, winter low temperature inhibition Black spiny whitefly hair