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近几年,毛白杨作为北方地区特有的乡土用材林树种,以其速生、材质优良的特点,深受广大群众喜爱,因此,毛白杨病虫害防治显得尤为重要。一、毛白杨锈病是幼苗和幼林的主要病害之一。病菌主要在芽内潜伏越冬,来年发芽时就可见带有大量夏孢子的新叶,它是春季的发病中心。防治方法①摘病芽、剪病枝。自发芽开始,每隔3～5天调查一次,发现病芽立即摘掉。②加强营林措施,氮肥不应过多,防止徒长,苗木密度不要太大。③喷药防治。自发病初期开始,每隔10～15天喷一次药。可选用以下农药:波美0.3～0.5度的右灰
In recent years, Populus tomentosa as a unique native to North China timber forest tree species, with its fast-growing, excellent material characteristics, loved by the masses, therefore, Populus to prevent pests and diseases is particularly important. First, white poplar rust is one of the main diseases of young seedlings and young forests. Pathogenic bacteria are mainly in the bud lurking overwintering, the next year when the germination can be seen with a large number of new spores of the new leaf, it is the onset of the spring center. Prevention methods ① pick buds, cut diseased branches. Since germination began, every 3 to 5 days to investigate and found that the diseased buds immediately removed. ② strengthen silviculture measures, nitrogen fertilizer should not be too much to prevent leggy, seedling density should not be too large. ③ spraying prevention and treatment. Since the onset of early onset, every 10 to 15 days to spray a drug. The following pesticides can be used: Bomei 0.3 ~ 0.5 degrees right ash