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苹果苦痘病是苹果果实的主要生理病害。以红富士、乔纳金、国光等品种发病较重,特别近几年在套袋苹果上更为突出,发病率高达20～30%,严重影响了果品的质量和经济效益。苦痘病在果实近成熟期开始显现症状,贮藏期继续发展。发病初期以皮孔为中心出现颜色较深的圆斑,在红色果面上呈暗红色,在绿色或黄绿色果面上为浓绿色,多发生在果顶部和果肩的下半部,四周有深红色或黄绿色晕圈。随后,病部凹陷,表皮坏死,形成褐色陷斑,大小不等。轻病果上有3～5处,重病果上甚至多达7～8处,严重时病斑果面、病部果皮以下组织坏死、褐
Apple bitter pox disease is the main physiological disease of apple fruit. In Fuji, Jonathan, Guoguang and other varieties of serious incidence, especially in recent years, bagged apple is more prominent, the incidence of up to 20 to 30%, seriously affecting the quality of fruit and economic benefits. Bitter pit disease in the fruit near the maturity began to show symptoms, storage period continues to develop. Early onset of lenticels appear as the center of the darker color of the circular spot on the red fruit was dark red, green or yellowish green fruit surface is dark green, occurred in the top of the fruit and the lower part of the fruit shoulder, around Dark red or yellow-green halo. Subsequently, the Ministry of depression, epidermal necrosis, the formation of brown spots, ranging in size. Slight illness has 3 to 5 fruit, serious illness even as many as 7 to 8, the lesion surface lesions, diseased lesions of the following tissue necrosis, brown