枣瘤大球坚蚧研究  

A Study on Eulecanium gigantea

作　　者：王鸿哲[1] 

机构地区：[1]西北农林科技大学林科院,陕西杨陵712100

出　　处：《西北农业学报》2000年第4期82-86,共5页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：陕西省农业发展办公室

摘　　要：研究了枣瘤大球坚蚧各虫态的特征、生物学特性及枣瘤大球坚蚧发生危害与环境因素的关系。该虫在关中 1 a发生 1代 ,以 2龄若虫固定在幼龄枝条上越冬。 4月中、下旬是越冬雌虫危害盛期。 4月底 5月初雄虫羽化与雌虫交尾 ,产卵量 80 0 0～ 90 0 0粒 /只。卵期约 2 5d,5月底 6月初孵化为若虫。6～ 9月若虫危害 ,林缘危害重于林内 ,迎风坡重于平地、背风坡。同一树冠内 ,西、南危害重于东、北方位 ,树冠下层危害重于中、上层 ;1～ 2 a生枝危害 >3～ 4 a生枝 >5～ 6a生枝。蜡蚧寄生蜂和初孵若虫期 ( 6月上旬 )The damage of Eulecanium gigantea and its environment morphological characters, biological habits and the relationship between E. gigantea and environment were studied in this paper.It occurs 1 generation a year in poplars in Guanzhong region, Shaanxi Province and overwinters as second age nymph on young poplar branch.The nymphs began to damage in the middle to last ten day in April and were the dangerous in life cycle. Emergence and mating of male appeared in last ten day of April to beginning stage of May. 8 000～9 000 eggs per female are oviposited in early day of May, period of egg is about 25 d. The nymphs of E. gigantea began to emerge in last ten day in May to early days in June. June to August is the major damaged period. The occurence jeopardized regularity of E. gigantea are more dangerous in outer fringe than the inner woodland,and facing slope are more than the land or unfacing slope. In the same crown, there are more dangerous in the west and south than east and north,and the lower layer than middle and upper layer, and the 1～2y branch than 3～4y and 5～6y branch.The parasite and rainfall in the last ten day of May to first ten day of June are two major factors that control the population of E. gigantea .

关 键 词：瘤大球坚蚧 形态特征 生物学特性 防治技术 枣树 

分 类 号：S436.65[农业科学—农业昆虫与害虫防治] S763.35[农业科学—植物保护]