中国梨木虱第一代若虫空间分布特征  

Spatial Distribution Characteristics of the First-Generation Nymphs of Cacopsylla chinensis

作　　者：纪心如 赵龙龙[2] JI Xinru;ZHAO Longlong(College of Plant Protection,Shanxi Agricultural University,Jinzhong,Shanxi 030801,China;Pomology Institute,Shanxi Agricultural University,Jinzhong,Shanxi 030815,China)

机构地区：[1]山西农业大学植物保护学院,山西晋中030801 [2]山西农业大学果树研究所,山西晋中030815

出　　处：《植物医学》2022年第4期44-51,共8页Plant Health and Medicine

基　　金：国家梨产业体系(CARS-28-02A);山西省现代农业产业技术体系建设专项资金;山西省重点研发计划项目(201903D211001-1)。

摘　　要：中国梨木虱(Cacosylla chinensis)是梨树上的重要专性刺吸害虫.为明确中国梨木虱第一代若虫的空间分布特征,本文对中国梨木虱第一代卵的分布特点、若虫的空间格局进行了调查.结果表明,梨树萌芽前,中国梨木虱卵主要产在梨树短果枝、花芽、叶芽的刻痕部位;萌芽后,梨木虱主要在梨树花、叶、果实、新发嫩枝部分进行产卵;若虫主要分布在叶丛、果实及伴生叶和新生嫩枝3个部位,其中以新生嫩枝上的若虫数量最多,平均为66头,显著多于叶丛(18头)和果实及伴生叶部位(10头),且均呈聚集分布,其聚集特点主要受母代产卵特点及习性等共同影响.Cacopsylla chinensis is an important obligate sucking insect pest in pear tree. In order to clarify the spatial distribution pattern of the first-generation nymph of pear psylla, this study investigated the spatial distribution pattern of the first-generation egg and nymph of pear psylla. Results showed that winter-form pear psylla mainly oviposit on the scale of the short fruit branches, flower buds and leaf buds before germination. The average number of nymphs were 66 on new shoots, which was significantly higher than that of 18 on leaf plexus and 10 on fruit and associated leaves. The spatial distribution of first-generation nymph of pear psyll apresented an aggregated distribution, and their aggregation pattern was affected by the characteristics of maternal oviposition and its habit behavior.

关 键 词：中国梨木虱 空间分布 若虫 产卵 

分 类 号：S436.612.2[农业科学—农业昆虫与害虫防治]