摘要
李缘刺蜡蚧 (Stotziasp )是李树的重要害虫 ,在昆明地区 1年发生 1代 ,以 2龄若虫在枝条上越冬 .每头雌虫产卵量平均为 6 0 0粒 .若虫 2龄 ,1龄若虫在叶片上取食 ,2龄若虫在 1～ 2年生枝条上固定 ,直至进入成虫期 .成虫期和 1龄浪荡若虫期是进行防治的关键时期 .当虫口密度过大时 ,于 2月下旬至 3月中旬剪除雌虫集中的枝条 ,并于 4月下旬至 5月下旬 1龄浪荡若虫期使用 1∶30 0 0倍敌杀死水溶液进行化学防治是最有效的防治措施 .果园管理不善是李缘刺蜡蚧成灾的主要原因 ,提高果园管理水平 ,建立虫情监测制度 ,保护利用天敌 ,并配合必要的化学防治 。
The scale insect Stotzia sp.is an important pest of plum Prunus salicina .The insect has one generation annually in Kunming district,and overwinters by second instar nymphs on plum branches.Each female can lay 600 eggs in average.The nymph has 2 instars,the first instar nymphs feed on leaves,and the second instar ones feed and fix on 1-2 years old branches until they become adults.The adult period and the active period of the first instar nymph are the important times for eliminating the pest.The most effective methods to lower the population are cutting away twigs which bear the female adults from late February to middle March and spraying 1∶3000 deltamethrim liquor to kill the active first instar nymphs from late April to late May when the pest is densely populated.The defective management of the plum orchard is the chief reason for causing outbreak.The feasible measures to control the pest are improving management methods of the orchard,eastablishing the pest population monitering system,protecting natural enemies,and applying necessary chemical pesticides.
出处
《西南林学院学报》
1998年第4期282-290,共9页
Journal of Southwest Forestry College
