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大叶黄杨是卫矛科卫矛属常绿灌木或小乔木。因耐修剪,常被作为绿篱材料应用在园林绿化中。但大叶黄杨常会发生大叶黄杨叶斑病。发病规律及症状大叶黄杨叶斑病是一种真菌病害,以菌丝等形态在植株病叶或落叶上越冬。其孢子由风雨进行传播。通常到翌年春季,随着气温回升,产生分生孢子,并由气孔或剪口、伤口等侵入。一般20℃~30℃的气温该病易发生,因此该病害通常于6月开始侵染,7、8月是侵染盛期。一般8月中旬会出现病害症状,
Euonymus Euphorbiae is an evergreen shrub or small tree. Because of resistance to pruning, often used as a hedge material in landscaping. However, Euonymus japonicus leaf spot occurs. Pathogenesis and symptoms of large leaf box leaf blight is a fungal disease in mycelium and other forms of diseased leaves or fallen leaves on the winter. Its spores are spread by wind and rain. Usually, the following spring, as the temperature rises, conidia are generated and invaded by stomata or incisions, wounds and the like. Generally 20 ℃ ~ 30 ℃ temperature of the disease prone to occur, so the disease usually begins in June infection, July and August is the peak of infection. Usually in mid-August there will be disease symptoms,