迭部林区油松林蛀干害虫发生与防治研究

Study on Occurrence and Control of Trunk Borers in Pinus tabulaeformis Woods in Diebu Forest Region

油松为迭部林区主要的造林树种,在林业发展中有着非常重要的作用。近年来,油松林受蛀干害虫危害逐渐加重,危害面积逐年增大,对林区林木群落的稳定造成严重威胁。蛀干害虫具有隐蔽性强、成虫期长、传播速度快、寄主植物多及自然控制能力弱等特点,防治困难,发现时林木已濒临死亡,同时蛀干害虫已大面积扩散,短期内无法得到有效控制。目前主要使用化学方法进行防治,但化学防治容易造成环境污染。对油松林蛀干害虫发生的原因进行分析,并提出相应的综合防治对策。

Pinus tabulaeformis is the main afforestation species in the overlapping forest region and plays a very important role in forestry development. In recent years, the damage of dry pests in Pinus tabulaeformis woods has been increasing gradually, and the damage area has been increasing year by year,which poses a serious threat to the stability of forest community. It is difficult to control and control the pests because of their strong hiding, long adult period, fast transmission speed, many host plants and weak natural control ability, etc. At the time of discovery,trees were on the verge of death, and the pests had spread to a large area and could not be effectively controlled in a short period of time.At present, chemical control is mainly used,but it is easy to cause environmental pollution.In this paper, the causes of the occurrence of dried pests in Pinus tabulaeformis woods were analyzed, and the comprehensive control measures were put forward.