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灰霉病是危害草莓最严重的一种真菌病害,发生严重的年份可造成50%的减产。该病主要危害果实,花瓣、果梗、叶片和叶柄也均可感染。果实经常在接近成熟期发病,刚开始发病时,受害部位出现黄褐色斑点,似油浸状;然后病斑逐渐扩大,边缘为棕褐色,中央为暗褐色,而且病斑周围呈现油渍状,最后整个果实变软腐烂。发病部位表面着生一层灰色霉状物,如果湿度大,会有白色絮状菌丝长出。茎、叶、花感染此病后,患病部位呈褐色,油渍状。该病的病原菌为灰霉菌。在气温18℃~28℃及高湿的条件下,灰霉病发
Botrytis is the most damaging fungal disease in strawberry and can cause a 50% reduction in the most severe years. The main hazards of the disease fruit, petals, fruit stems, leaves and petioles can also be infected. Fruit often close to the onset of maturity, the onset of onset, the affected parts appear brown spots, like oil-like; and then the lesion gradually expanded, the edge of the tan, the central dark brown, and spots around the appearance of oil-like, and finally The whole fruit softens and rots. The surface of the disease surface with a layer of gray moldy material, if the humidity, there will be white flocculent mycelium grow. Stems, leaves, flowers infected with the disease, the affected parts brown, oil-like. The pathogen is gray mold. In the temperature of 18 ℃ ~ 28 ℃ and high humidity conditions, gray mold disease