论文部分内容阅读
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，但发芽率等种子播种品质并不下降
Through the establishment and analysis of the life table of cones, it was found that there were 6 kinds of coniferous pests in Pinus tabulaeformis plantation in Xingcheng, Liaoning, including Cecidomyiaweni, Dioryctriapryeri, (Retiniacristata) were the key pests of cones. The proportion of loss of cones caused by various pests was determined. From the appearance of female flower to the collection of cones, 92.27% of cones lost, and the insects accounted for the overwhelming majority . Conch seed quality test showed that the coniferous seed yield was significantly reduced, but the germination rate and other seed sowing quality does not decline