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大叶黄杨白粉病为山东新记录病害。主要危害寄主的叶片和新梢，病部覆厚白粉层、扭曲畸形；病菌以菌丝在病组织越冬，一年内５─７月及９─１０月出现两次发病高峰；孢子靠风雨传播，直接穿透侵入寄主，潜育期５─８天；孢子萌发高峰期为（置于生化培养箱后）７２小时，寿命短（最多３─５天），萌发最适温度为２０℃，最适相对湿度为１００％，蔗糖液、寄主叶汁及光照促进孢子萌发；室内毒力测定结果，７０％托布津１５００倍液，４０％多菌灵（胶）或２０％粉锈宁或７０％代森锰锌各１０００倍液和０．３～０．５°Ｂｅ石硫合剂，能抑制所有的孢子萌发。
Euonymus japonicus powdery mildew is newly recorded disease in Shandong. The main damage to the host leaves and shoots, disease thick layer of white powder, distortion of the deformity; bacteria to mycelium in the winter sickness, within a year from May to July and September-October two peak incidence; spores by storm spread, Direct penetration penetrate the host, the incubation period of 5 ─ 8 days; peak spore germination (placed in the biochemical incubator) 72 hours, short life expectancy (up to 3 ─ 5 days), the optimum temperature for germination 20 ℃, the optimum Relative humidity of 100%, sucrose solution, the host leaf juice and light to promote spore germination; indoor toxicity determination results, 70% Topaz Jin 1500 times, 40% carbendazim or 20% triadimefon or 70% Zinc 1000 times each liquid and 0.3 ~ 0.5 ° Be limestone sulfur, can inhibit all spore germination.