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一、症状类型及发生特点 辣椒疫病的症状有根腐、根茎腐烂、叶枯及根茎腐烂叶枯混合发生几种类型。这几种症状在各地都有发生。北方干旱地区露地栽培的多发生根茎腐烂,夏秋季如遇大雨田间相对湿度高也会发生叶枯症状,果实霉烂全株迅速枯萎死亡。保护地辣椒以叶枯症状居多、发病早蔓延快。多雨潮湿的南方叶枯、根茎腐烂症状都有。辣椒在苗期以根腐居多。 二、发生原因
First, the type of symptoms and the occurrence of the symptoms of pepper disease root rot, rhizome rot, leaf blight and rhizome rot leaves mixed several types occur. These symptoms have occurred in various places. In the northern arid area, most of the cultivated rhizomes rotted in the open field. Leaf blight symptoms occurred in the summer and autumn when the relative humidity in rainy days was high. Pepper leaves to protect the majority of symptom, incidence of early spread faster. Rainy wet southern leaf blight, root rot symptoms have. Pepper rooted in seedling mostly. Second, the reason