关键词: 枣, 绿盲蝽, 越冬卵, 分布, 剪口, 周皮部, 髓心部

Abstract: It was largely unknown about the distribution of overwintering eggs of Apolygus lucorum（Meyer-Dür）on the branches of‘Lingwu’jujube orchard in Ningxia region. An investigation on the location of the overwintering eggs of A. lucorum in the two-jujube orchard were carried on by using the method of“Z”type in March 2018，and their number and morphological traits in the pruning wounded position were analyzed. The results showed that the average number of eggs on the current-year branch was significantly greater in the pruning wounded position than in the both mother spur and cracks of old barks；there was significantly higher values in two-year-old and perennial pruning wounded positions than the one-year-old ones；there was significantly lower values located in periderm than in pith，whereas there was significantly higher egg-carrying rate located in the periderm than in pith. The length and plumpness of the overwintering eggs were significantly higher in periderm than in pith，whereas there was no significant difference in width and number of shriveled eggs between the two locations. It was suggested that the overwintering eggs of A. lucorum were mainly located at the dormancy pruning wounded positions，and it was projected observed in the periderm and the pith for their oviposition under well-management jujube orchard. It was concluded that both the closed pruning wounds and early spring pruning residues were the key measures to control the damage of A. lucorum in terms of their distribution.

Key words: jujube, Apolygus lucorum, overwintering egg, distribution, pruning wound, periderm, pith