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一、寄主及危害 油松球果螟Dioryctria mendacella Stau-dinger是章古台地区松林内主要害虫之一。除严重危害油松Pinus tabulaeformis Carr.外,尚危害赤松Pinus densiflora Sieb.et Zucc.和獐子松Pinus sylvestris Linnaeus var.mongolicaLitvin.。 幼虫不仅危害二年生球果,而且严重危害一年生主梢和侧梢,个别植株一年生梢几乎100％受害。一年生球果和二年生梢,也皆受其危害。严重影响松树的生长和材质。球果受害后,使种子产量下降,影响造林事业的开展。
First, the host and endanger pine cone borer Dioryctria mendacella Stau-dinger is one of the major pests in the pine forest in the Zhang Gu-tai area. In addition to the serious endanger Pinus tabulaeformis Carr., Pinus densiflora Sieb.et Zucc. And Pinus sylvestris Linnaeus var. MongolicaLitvin. Larvae not only endanger the two-year-old cones, but also seriously endanger the annual shoots and lateral shoots, individual plant annual shoot almost 100% victimized. Annual cones and two-year-old shoots are also endangered. Seriously affect the growth and texture of pine trees. Cone damage, the seed yield decreased, affecting afforestation undertaking.