论文部分内容阅读
油松球果小卷蛾是国外松种子园主要种实害虫之一。1年1代,以蛹在枯枝落叶下越夏过冬;2月上旬至4月上旬,幼虫为害雌花、1年生球果和嫩梢;害虫各虫态出现与寄生物候关系密切;成虫产卵多选择长叶烯、海松酸含量低,枞酸含量高的无性系植株。在成虫羽化始盛期,用2.5%溴氰菊酯乳油1万倍液或前者2万倍与50%甲胺磷乳油0.4万倍混合液喷雾,能有效防治害虫,而且对雌花、球果正常发育没有影响。
Pinus tabulaeformis is one of the main species of pests in the pine seed garden. 1 year and 1 generation, the pupal in litter over the summer winter; early February to early April, the larvae damage female flowers, 1-year-old cones and shoots; pest appearance and parasitic phenological relationships; adult eggs and more Select longifolene, low content of pimaric acid, abietic acid content of clonal plants. At the beginning of adult emergence, with 2.5% deltamethrin EC 10,000 times or the former 20,000 times and 50% methamidophos 40,000 times the mixture spray, can effectively control pests, and the female flowers Cone normal development has no effect.