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经调查,在石家庄市郊区柿园蚧虫有6种:柿绒蚧、柿真棉蚧、日本龟蜡蚧、角蜡蚧、草履蚧、桃树木坚蚧,其中前两者为优势种,柿真棉蚧为国内新纪录。其发生特点是数种混合发生,但以一种为主。对柿树物候和主要蚧虫的生活史观察表明:蚧虫的发生与柿树物候期有一定相关性,从而确定了灭虫的最有效时间是:柿绒蚧在柿树结果后、果膨大前(6月10日前后);柿真棉蚧在柿果膨大前后(6月中旬);日本龟蜡蚧在果膨大以后(6月下旬);草履蚧在柿树芽萌动时期(3月上旬)。控制柿树蚧虫的危害,仍应以化防为主,保护利用天敌为辅。用久效磷或氧乐果喷雾防治,虫口减退率在94%以上,辅之以久效磷涂梢,防效可达100%。
After investigation, in the suburbs of Shijiazhuang City, there are 6 kinds of scale insects in persimmon garden: persimmon scales, persimmon cotton scale, Japan turtle scale scale, horn wax scale, Carassius auratus, peach tree scale, of which the former two are the dominant species, persimmon True cotton scale for the new record. Its occurrence is characterized by several mixed occurrence, but mainly one. The observation of the life history of the persimmon phenology and the major scale insects showed that the occurrence of scale insects had some correlation with the phenophase of the persimmon, and the most effective time of pest control was determined as follows: (Before and after June 10); Persimmon cottonsex before and after the persimmon inflated (mid-June); Japan turtle scale insects inflated after the fruit (late June); Grasshoppers in the persimmon bud sprouting period (early March ). To control the harm of persimmon scale insects, chemical defense should still be the main protection and use of natural enemies. With monocrotophos or omethoate spray control, insect population reduction rate of 94%, supplemented by monocrotophos coated, anti-effect up to 100%.