帽儿山红松干小蠹综合防治

Integrated Control of Hylurgops interstitialis in Maoer Mountain

为了有效防治帽儿山地区红松干小蠹(Hylurgops interstitialis Chapuis)的危害,采用营林措施、性信息素和植物源引诱剂诱捕及几种化学防控方法,对被红松干小蠹危害的红松林分进行处理,结果表明:利用营林的方法,将重度受害的红松贴近地面伐除焚烧,并对伐根喷混合农药原液密封处理,能够有效阻止红松干小蠹扬飞期的扩散;利用8种诱芯在林间对红松干小蠹进行诱捕,发现红松干小蠹对落叶松八齿小蠹、六齿小蠹诱芯和小蠹属诱芯表现出一定的趋性,可以选择落叶松八齿小蠹诱芯对红松干小蠹的发生进行预测预报。采用3种施药方式开展了化学防治,其中利用喷雾机对树干进行喷施的防治效果最好;采用涂干法对被害红松进行处理时,所选5种药剂的防治效果均不如喷雾法的防治效果;打孔挂药袋注药法整体防治效果较差。3种施药方式下吡虫啉杀虫效果均较好;溴氰菊酯在利用喷雾法和涂干法对红松干小蠹的杀虫效果也比较理想。

To effectively control the damage of Hylurgops interstitialis in the Maoer Mountain,forestry measures,sex pheromones and plant-derived trapping lures and several chemical control methods were employed to treat Pinus koraiensis damaged by H.interstitialis.H.interstitialis was effectively prevented from spreading during the flying season by cutting down and burning the severely damaged P.koraiensis close to the ground and spraying the roots with 100% pure pesticide mixture for sealing.After eight lures were used to trap H.interstitialis in the forest,H.interstitialis was found to show a certain tendency to Ips subelongatus,I.acuminatus and Scolytusspp lures,so I.subelongatuslure could be selected to predict the incidence of H.interstitialis.Chemical control was conducted with three application methods,of which spraying the tree trunk with a sprayer produced the best control effect.In the treatment of damaged P.koraiensis,lacquering was outperformed by spraying in the control effect of five selected agents.The control effect of perforated bag injection was poor overall.The insecticidal effect of imidacloprid was great with all three application methods.The insecticidal effect of deltamethrin was also satisfactory with spraying and lacquering.