摘要
在深入研究落叶松种实害虫种群动态的基础上,探讨了各种防治措施在综合治理中的地位、作用和效果。通过实践,总结出一套适用于落叶松种子园种实害虫综合治理的措施,即在结实的欠年,加强经营管理,采用多种营林措施,不断改善种子园的生态条件,促进母树的结实量,提高树木抗御病虫的能力,尽量少用或者不用农药,充分发挥天敌在自然界的调节作用;在结实的丰年和平年,可使用高效、低毒的菊酯类农药,并改进施药方法,减少环境污染,以利林内生态平衡的恢复。
The position role and effect of different control measures were discussed in the integrated management against thc cone and seed pests of Larix gmelini based on the study of the pest population dynamics. A series of integrated pest control measures adapted to Larix gmelini seed orchard was summarized.In lean year for seed production intensif- ying orchard management,employing various silvicultural control methods and improving ecological environments will enhance the resistance of trees to pests and also increse seed output.The regulation of natural enemies in forests could be completely utilized by less using pesticides.Decreasing environment pollution and restoring ecological equilibrium in forests.The pyrethroids can be used to reach that goal during bumper and normal year.
出处
《陕西林业科技》
北大核心
1992年第2期66-70,83,共6页
Shaanxi Forest Science and Technology
