辽宁省沙棘木蠹蛾综合治理初步研究

沙棘木蠹蛾Holcocerus hippophaecolus Hua,Chou,Fang et Chen是沙棘的一种钻蛀性害虫,主要在寄主主干和根茎内蛀食危害。近年来,在辽宁、内蒙古、山西、陕西等地发生大面积危害,并呈加剧之势。作者详细调查了沙棘木蠹蛾在辽宁的危害,开展了化学防治试验和沙棘林分大面积营林改造等综合治理措施的研究。研究结果表明:沙棘木蠹蛾的危害与林龄成正比,林龄愈大危害愈重;纯林和混交林中的沙棘受害程度无明显差别;采用营林改造技术林分生态系统恢复快,效果明显,中度受害的林分平茬更新当年即可丛生枝条,2 a即可成林,是控制沙棘木蠹蛾的有效方法。

Integrated management of Holcocerus hippophaecolus in Liaoning Province

Seabuckthorn carpenter worm(Holcocerus hippophaecolus Hua Chou,Fang et Chou) was one of the borers attacking Seabuckthorn,which mainly harmed the roots and stems of hosts.In recent years,the damage of the pest in Liaoning,Inner Mongolia,Shanxi and Shaanxi became serious.The harm in Liaoning,chemical control and altenation of Seabuckthorn forest were studied and the result showed that the harm of Seabuckthorn carpenter worm was positively related with the age of the forest;There was no difference between pure seabuckthorn forest and mixed forest in the damage degrees;the effect of chemical control was well,but the application of drug was difficult and the cost was high.The improvement of silviculture was much more effective and the ecosystem of forest renewed quickly.