影响上海黄瓜霜霉病发生的因素分析  

EFFECTS OF CLIMATICAL FACTORS ON THE OCCURRENCE OF CUCUMBER DOWNY MILDEW IN THE SUBURBS OF SHANGHAI

作　　者：黄晓敏[1] 杨芝[1] 吕云华[1] 

机构地区：[1]上海市农业科学院植物保护研究所

出　　处：《上海农业学报》1989年第1期83-88,共6页Acta Agriculturae Shanghai

摘　　要：1984—1987年对黄瓜霜霉病的田间发生进行了定田调查、普查及设立观察圃系统调查。结果表明,黄瓜作物在上海地区的栽培及气候条件下,揭去保温塑膜前霜霉病极轻;5月中旬揭膜后,雨量为发病的关键因素,多雨导致霜霉病流行为害。此时期是防治黄瓜霜霉病的关键期。<Abstract >The occurrence and development of cucumber downy mildew (Pseu- doperonospora cubensis) had been observed in the field for three years. In 1987, an observation plot was set, and the disease of cucumber was investigated in large areas. The result shows that diseased cucumber seedings are triflingly injured under cultural condition and climatical factors within the polyethylene film. After the film is uncovered in second ten days of May, temperature and sunlight are suitable for the disease development. The rainfall then is the key factor to the disease epidemy, much rainfall makes the disease epidemic. Hence, this period is the most important for controlling the disease.

关 键 词：黄瓜 黄瓜霜霉病 气候因子 

分 类 号：S436.1[农业科学—农业昆虫与害虫防治]