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真菌病对松树、云杉和落叶松种、苗的危害,是这些树种育苗的严重障碍,常引起苗木大量死亡。最危险和最常见的传染病是粹倒病。 巴什基里亚林业试验站查明,松树、云杉和落叶松苗粹倒病源体是镰刀菌属真菌,罕为交链孢菌等,而菌媒则为土壤线虫。1—2周幼苗发病刚开始,其基本生理生化过程即发生明显变化,结果造成幼苗死亡,尤其是在出土后头3周内。
The damage of fungal diseases to pine, spruce and larch species and seedlings is a serious obstacle to the seedling development of these species and often causes a large number of seedlings to die. The most dangerous and most common infectious disease is catastrophic. Bashkirya forestry pilot found that pine, spruce and larch Miao inverted sources are Fusarium fungi, rare for Alternaria, etc., and bacteria media is soil nematodes. The onset of 1-2 weeks of seedlings has just begun, the basic physiological and biochemical processes that change significantly, resulting in seedlings died, especially in the first three weeks after the excavation.