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红松松针锈病是黑龙江省伊春林区普遍发生的病害,主要为害15年以下的幼树,病原菌是凤毛菊鞘锈菌。松针锈病不能至死幼苗,但降低幼苗的生长率。病原菌是转主寄生的,性孢子和锈孢子寄生于红松针叶上,夏孢子和锈孢子寄生于凤毛菊叶背面。当年冬孢子萌发产生的担孢子是红松的初侵染源。在林中锈孢子的放散期是5月中旬至6月中旬,6月上旬为放散期盛期。各种孢子的萌发温度:锈孢子10℃—27℃,最适温度25℃,夏孢子20℃—30℃,最适温度22℃,担孢子10℃—25℃,最适温度20℃。早春是病害防治适宜时机,最好的药剂是不硫合剂,其次是代森铵,退菌铵。
Korean pine needles rust is a common disease in Yichun forest area of Heilongjiang Province, the main damage to young trees below 15 years, the pathogen is Chaetomium rust fungus. Pine rust can not die seedlings, but reduce the growth rate of seedlings. Pathogen is the main parasitic, spores and rust spores parasitic on pine needles, summer spores and rust spores parasitized in the back of spatopsis leaves. The spore germination of winter spores produced by the initial infection of Korean pine. In the forest rust spore release period is mid-May to mid-June, early June for the peak period of dissipation. Spores germination temperature: spores 10 ℃ -27 ℃, the optimum temperature of 25 ℃, the temperature 20 ℃ -30 ℃, the optimum temperature of 22 ℃, spores 10 ℃ -25 ℃, the optimum temperature of 20 ℃. Early spring is the appropriate time to disease prevention and treatment, the best agent is not sulfur compounds, followed by the generation of ammonium, anti-bacterial ammonium.