黄瓜黑星病是一种检疫性和毁灭性病害,在许多地区呈迅速扩展蔓延之势,危害日趋严重,近年来以温室大棚黄瓜发病较重,危害广泛,难以铲除,严重影响黄瓜的产量和质量,严重田块减产可达50%以上,直至绝产。发病原因:引起黄瓜黑星病的病原为半知菌亚门真菌瓜疮痂枝孢霉,其分生孢子淡褐色,直立梗单生或丛生,顶部、中部稍有分枝或单枝,单生或串生褐色或橄榄绿色的卵形、不规则形分生孢子(图1),分生孢子单胞、双胞、少数三胞。病菌除主要侵染黄瓜外,还侵染西葫芦、南瓜、冬瓜等。 Cucumber scab is a quarantine and devastating disease in many areas showed a rapid expansion of the spread of the trend, the increasingly serious harm, in recent years, the incidence of cucumber greenhouse greenhouse heavy, widely hazardous and difficult to eradicate, seriously affecting the yield of cucumber and Quality, serious plots yield reduction of up to 50% or more, until the abortion. Cause of the disease: cucumber scab causes pathogenic Candida semiautuberculatus melitta mycelia spore mold, its conidia brown, upright stems solitary or clustered, the top, the central slightly branched or single, single Or spawn brown or olive green oval, irregular shaped conidia (Figure 1), conidiophores, twin, a few triad. In addition to the main cucumber infection, but also infected zucchini, pumpkin, melon and so on.