油松球果生命表分析及其虫害球果品质测定

Analysys of Cone Life Table of Pinus tabulaeformis Carr. and the Yield and Quality of Cones Damaged by Insect

通过球果生命表的组建和分析，明确辽宁兴城油松种子园共有球果害虫６种，其中油松球果瘿蚊（Ｃｅｃｉｄｏｍｙｉａｗｅｎｉ）、松果梢斑螟（Ｄｉｏｒｙｃｔｒｉａｐｒｙｅｒｉ）和松实小卷蛾（Ｒｅｔｉｎｉａｃｒｉｓｔａｔａ）为球果的关键害虫；确定了各种害虫引起的球果损失比例；从雌球花出现到球果采收，有９２．２７％的球果损失，其中昆虫危害占绝大多数．球果种子品质检验表明，受害球果的种子产量显著减少。

There are six species of cone insect pests for P.tabulaeformis in the Pinus tabulaeformis Carr.seed orchard in Xingcheng,Liaoning province.Cecidomyia weni Jiang seriously damages 1 year old cones.Dioryctria pryeri Ragonot and Retinia cristata Walsingham take conelets and cones as food from early May to early June. More than 90 percent of the cone and seed yield are damaged by cone insects. Cone pests conspicuously affectes the cone weight, seed weight, thousand seed weight, produced seed number and produced seed weight rate. But they don't have any conspicuous effect on germination value. C. weni, D. pryeri and R. cristata are the main cone and seed pests in the seed orchard.