一、发生与为害 1992年我们在曲阳辛庄梨园蹲点调查,发现梨园内有高密度的梨蝽象发生且为害相当严重,据调查,7月下旬至发生盛期,45年生梨树上发生最多的达34头,少者3头,平均每株14头,一般果园周围的梨树上发生较多,园内部发生较少。梨蝽象主 First, the occurrence and damage In 1992, we surveyed in Quyang Xinzhuang pear orchard and found pear garden there is a high density of pear stinkbug and the damage is quite serious, according to the survey, from late July to peak occurrence, 45-year-old pears occur most Up to 34 heads, less 3 heads, with an average of 14 heads per plant. Pear trees around the orchard generally occur more and less within the garden. Pear bug like Lord