防治池杉猝倒病一般使用波尔多液、硫酸亚铁、苏化911,多菌灵和五氯硝基苯等为主的混合剂,这些药利易污染环境,配制也较麻烦。试验用新洁尔灭防治池杉猝倒病取得良好效果。用5％新洁尔灭2,000倍液喷洒池杉苗,平均降低发病率27.3％。试验接种丝核菌、镰刀菌、腐霉菌以后, Prevention and cure of Cunninghamlyphosis Decoction generally use Bordeaux mixture, ferrous sulfate, Suhua 911, carbendazim and pentachloronitrobenzene-based mixture, these drugs easy to pollute the environment, the preparation is also more troublesome. Experiments with benzalkonium control pool fir damping-off disease achieved good results. Spruce seedlings were sprayed with 5% benzalkonium bromide 2,000 times, which reduced the average incidence rate by 27.3%. After inoculation Rhizoctonia, Fusarium, Pythium,