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茄子灰霉病是春季大棚、日光温室、塑料薄膜覆盖栽培茄子的重要病害.其特点是病害发生早、传播快、危害重、防治难.田间发病症状是:叶片受害自叶缘向内扩散,产生黄褐色V字形或近圆形轮纹病斑,潮湿时病部散生灰霉,后期叶片枯死.幼苗中上部茎被危害后,初为水渍状斑,后扩展绕茎一周,形成灰褐色缢缩,湿度大时着生灰霉,茎维管束变褐腐烂,植株自受害处向上萎蔫死亡,形成无头苗,死苗率一般10—20%,严重时在40%以上,导致田间缺棵断垄.花器及幼果受害后呈黄褐色腐烂,高湿时病部散生灰色霉层,导致茄子果实凹陷腐烂脱落,早期产量下降3—5成.早春低温高湿、光照不足以及多年重茬、管理失误均是茄子灰霉病严重发生的重要条件,尤其是高湿(相对湿度在90%以上),是茄子灰霉病发生的主导因素.因此,防治茄子灰霉病应采取精细管理、控制湿度、药剂预防等综合防治措施.
Eggplant Botrytis cinerea is an important disease in greenhouse, sunlight greenhouse and plastic film covered with cultivated eggplant, which is characterized by early occurrence of disease, rapid spread, heavy damage and prevention and cure. The symptom in the field is: Resulting in yellowish-brown V-shaped or nearly circular pattern of round spots, damp wet sick parts of intersity and gray mold, the late leaves withered seedlings in the upper stem is harmed, the initial water stains, after the expansion around the stem a week to form a gray Brown shrinking, when the humidity is high, gray mold, stem vascular bundle brown rot, plant wilt wilt upwards to form a headless seedlings, dead seedling rate is generally 10-20%, severe in more than 40%, leading to field Lack of broken ridge.Flowers and young fruit after the damage was brown decay, high humidity when the gray mold layer scattered mold layer, resulting in decay and fall off the eggplant fruit depression, the early output decreased by 3 to 5. Early spring low temperature and humidity, lack of light and Many years of continuous cropping and management errors are the important conditions for severe occurrence of Botrytis cinerea, especially high humidity (relative humidity above 90%), which is the dominant factor of eggplant gray mold occurrence. Management, control of humidity, drug prevention and other comprehensive Prevention.