The fructification character of the plus tree clone of Pinus koraiensis distribution area which was selected by Hongwei seed orchard of Lushuihe Forestry Bureau of Jilin Province was observed and analyzed synthetically .The result showed that 11 particularly superior clone and 51 superior clone of fructification character of Pinus koraiensis were selected from 628 clones.The total number was 62.It provided practical basis and gene reserve for constructing the seed orchard of Pinus koraiensis and fruit forest base .

林业经济作为当今社会又一重要话题，它不仅与人们生活息息相关，同时也影响着社会的和谐发展。在市场经济飞速发展的时代下，加强林业经济管理、促进林业和谐发展成为社会和谐发展的重要因素和手段。

在采用TCT-GC/MS对松果梢斑螟不同危害期红松挥发性物质分离鉴定的基础上,分析松果梢斑螟越冬幼虫对越冬幼虫转移危害期红松不同组织挥发性物质的嗅觉反应.结果表明,松果梢斑螟不同危害期红松球果及越冬幼虫转移危害期红松不同组织挥发性物质的组成与含量均存在差异;红松健康球果、健康2年生枝和针叶主要挥发性物质标样乙醇溶液对越冬幼虫的引诱作用显著高于乙醇对照组,而红松健康球果主要挥发性物质标样乙醇溶液的引诱作用显著大于健康2年生枝与针叶主要挥发性物质标样乙醇溶液;α-蒎烯、柠檬烯及α-蒎烯+β-蒎烯乙醇溶液对越冬幼虫的引诱作用明显强于红松健康球果主要挥发性物质标样乙醇溶液,且以α-蒎烯的引诱作用最强.

Dioryctria pryeri,an important pest that causes damage to cones of Pinus koraiensis,it is difficult to be controlled because of its cryptic characteristics.Control test by using six medicaments with high effect,low poison and without environment pollution and 40% omethoate under routine operation was conducted in seed orchard of Lushuihe Forestry Bureau,Jilin,China.The result showed that the suspended liquid of 20% triflumuron had made best effect with 88% killing rate.

Dioryctria pryer,as a borer with its larva made damage to tender shoot and annual cone of Pinus koraiensis,which has one generation a year at Lushuihe Forestry Bureau of Jilin Province,China.Its larvae in 3～4 instars overwinter for themselves in the cones,plucked traces and tender shoots,begin to damage from the fifth month of second year and pupation stage at end of the May to last ten-day of the June,and eclosion of imagines appear in middle of the June to first ten days of the July,same time to the egg stage.After incubation in end of the June to the middle of July,parts of the larvae begin to damage then turn into overwintering.

In the course of the market economical development, some issues in silvicultural production are not suitable for it, which consistently puzzle the forest industrial enterprises. In order to transform the way of forest management, go to promote forestry with science and technology and restore the status quo ante of forest industrial enterprises, part of the questions were studied and relevant improvements were put forward.