【摘要】 通过实地调查，根据桑天牛为害情况，将河北省划分为６个区，分别代表不同桑天牛猖獗类型，并明确了其分布情况、寄主类型。其中河北平原区、冀西山区、冀东山区为猖獗区；滨海平原区为分布区；冀北、冀西北山区为偶发区；冀北、冀西北坝上高原山区为未发现区。并对代表不同类型的５４个县（市）以自然、气候因子为聚类因子进行聚类分析，结果与实际相吻合。更多还原

【Abstract】 According to onthespot investigation, the damaging situation of Apriona germari in Hebei Province has been divided into six districts that represent different rampant types of Apriona germari.The distribution characteristics and host types of Apriona germari have been defined.The plain area,west mountain area and east mountain area of Hebei belong to the rampant district.The coastal plain area belongs to distribution district.The north and northwest mountain areas belong to the fortuitous distribution district.The north and northwest plateau and mountain areas belong to the district without damaging.The natural and climate factors of fifty four counties and cities that represent different types were analyzed by cluster analysis and the result was identical with actual situation.更多还原