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实践表明,在丘陵及海拔较低的林区,天牛肿腿蜂Scleroderma sp.对粗稍双条杉天牛Semanotus bifasciatus sinoauster Gressitt有很好的防治效果。我国南方有一部分杉林分布在海拔较高的山区,杉木受其为害相当严重,如广东省信宜县大雾岭林场约有90％的杉林(分布于海拔1000米以上)受到不同程度的为害。拮西县大北山林场的杉林(海拔700～800米左右)被害率达22.4～55.7％。在这些海拔较高的山区,温度较低,湿度较高,是否可利用天牛肿腿蜂来控制粗鞘双条杉天牛的为害?我们从1979年起在拮西县大北林场进行了试验。现将结果报告如下。
Practice shows that Scleroderma sp. Has good control effect on Semanotus bifasciatus sinoauster Gressitt in the hills and lower elevations of forests. In southern China, some cedars are scattered in mountainous areas with high altitudes. Cunninghamia lanceolata is particularly devastating. For example, about 90% of the cedars in Dawaowing Forest Farm in Xinyi County of Guangdong Province (distributed over 1000 meters above sea level) are subject to varying degrees of damage. Sugarcane Dabeishan Forest Farm in Sunsi (700 to 800 meters above sea level) victims rate of 22.4 ~ 55.7%. In these high mountainous areas, the temperature is lower, the humidity is higher, can we use the bullfrog to control the damage caused by the bullwhip? We started in 1979 in Xixi Dabei Forest Farm test. The results reported below.