本文以双条杉天牛为研究对象,首先探讨了在25℃条件下,氧硫化碳(COS)和硫酰氟(SO_2F_2)分别熏蒸双条杉天牛24 h时,投药剂量对其杀灭效果的影响。其次,配置了氧硫化碳和硫酰氟的混剂,分析了不同体积比的混剂对双条杉天牛的熏杀效果。结果表明,温度、时间一定时,熏蒸剂种类和投药剂量都是影响熏杀双条杉天牛效果的关键因素,两者熏杀效果随投药剂量增加而提高,其中硫酰氟较氧硫化碳的熏杀效果明显。在25℃条件下熏蒸24 h,致使双条杉天牛全部死亡的氧硫化碳和硫酰氟的投药剂量分别为279.26g/m~3和194.03 g/m~3。另外,混剂研究结果表明:添加10%、30%、50%体积比的硫酰氟对氧硫化碳的熏杀效果增效明显,其中添加50%体积比的硫酰氟后,只需加入31.63 g/m~3的氧硫化碳的混剂,即可在同等条件下杀灭全部双条杉天牛。 In this paper, Cunninghamia lanceolata as the research object, first to explore the 25 ℃ conditions, carbon oxysulfide (COS) and sulfuryl fluoride (SO_2F_2) were fumigated Cunninghamia lanceolata 24 h, the dosage of its killing Effect of effect. Secondly, a mixture of carbon oxysulfide and sulfuryl fluoride was prepared, and the effect of different volume ratios on the fumigation of Cunninghamia lanceolata was analyzed. The results showed that when the temperature and the time were fixed, the types of fumigant and dosage were the key factors that affect the effect of fumigating Cunninghamia lanceolata. The fumigating effect increased with the increase of dosage, The smoked kill effect is obvious. Fumigation at 25 ℃ for 24 h resulted in 279.26 g / m 3 and 194.03 g / m 3 dosages of all the oxycarbonitride and sulfuryl fluoride dying from Cunninghamia lanceolata. In addition, the results of the mixture research show that the effect of adding sulfuryl fluoride at 10%, 30%, and 50% by volume on the synergistic effect of the carbon oxysulfide is obvious. After adding 50% by volume of sulfuryl fluoride, 31.63 g / m ~ 3 carbon oxysulfide mixture, you can kill all double canes under the same conditions.