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油橄榄孔雀斑病危害叶片,也侵害枝条和果实,为一种严重的叶部病害。经考察,全国植株感病率为73.34%,卡林品种居于首位,病株率高达98.58%,病叶率61.11%,病情指数39.08,引起植株大量落叶、枝枯、树体衰败。初次侵染来自树上越冬病叶和病枝上的分生孢子,经雨水溅滴进行株内重复侵染。株间传播为风夹雨方式。区域性传播是伴随苗木、穗条带菌结果。接种试验证明,在适温内,潜育期较短,16～21℃为12～16天,22～25℃为19天,高于或低于适温范围,则潜育期延长,7～11℃为30～67天,乃至5个月。7℃以下未见显病,26℃以上停止侵染。在周年内,重庆橄榄园病害出现两个高峰期。据观察病害有四个时期,即春叶发病期(5月上旬～8月中旬)、相对间歇期(8月中旬～9月中旬)、夏秋叶发病期(9月下旬～12月下旬)和相对休止期(1～4月)。年病害进程呈双峰式曲线型,在多雨年份为单峰式曲线型。此病历史性较强。在平均气温16～22℃,空气湿度80～85%以上,病害普遍流行。可以认为,油橄榄孔雀斑病是一种中温高湿性病害。从长年的和周年的病害进程研究,初步认为,油橄榄孔雀斑病系一种积累流行性病害。
Oleifera perennial leaf damage leaves, but also against the branches and fruits, as a serious leaf disease. After investigation, the national plant infection rate was 73.34%, Carlin varieties in the first place, the diseased plant rate as high as 98.58%, diseased leaf rate of 61.11%, the disease index of 39.08, causing a large number of plants deciduous, withered branches, tree decay. The first infestation from the tree overwintering leaves and diseased branches of conidia, splashed drops of rain repeated inoculation in the plant. Spread between strains of the rain for the wind way. Regional transmission is accompanied by seedlings, spikes carrying the results. Inoculation experiments showed that the incubation period was short at 16-21 ℃ for 12-16 days and at 22-25 ℃ for 19 days, which was higher or lower than the suitable temperature range, the incubation period was prolonged, 11 ℃ for 30 to 67 days, and even 5 months. No obvious disease below 7 ℃, 26 ℃ or more stop infection. During the anniversary, there are two peaks in Chongqing’s olive grove disease. According to the observed disease has four periods, namely the onset of the spring leaves (early May ~ mid-August), the relative interval (mid-August to mid-September), summer and autumn leaf onset (late September to late December) and Relative rest period (January to April). The disease process was bimodal curve type, rainy years for the unimodal curve type. The disease is more historic. In the average temperature of 16 ~ 22 ℃, air humidity 80 ~ 85% or more, the prevalence of diseases. It is believed that the olive-leaf blotch disease is a mid-temperature and high-humidity disease. From the perennial and anniversary of the disease process research, tentatively believe that the olive-leaf blotch disease is a kind of epidemic disease accumulation.