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桃树褐腐病和流胶病是全国均有发生的桃树病害。褐腐病可引起全株无好果,流胶病可造成桃树衰败死亡,严重的甚至毁树毁园。桃褐腐病1.病状与起因桃褐腐病主要危害果实,也危害花、叶和新梢。花受害时,柱头先变暗,逐渐蔓延至花托和花梗,最后变褐枯萎,天气潮湿时迅速腐烂,干燥时则萎垂干枯但不脱落;嫩叶受害变黑,萎垂,残留于枝上不脱落;枝梢受害,先是新梢,然后是较大的枝条上产生长圆形灰褐色病斑,并发生流胶现象,严重时小枝枯死;果实则从幼果至成熟
Peach Brown rot and Silicosis are peach tree diseases that occur throughout the country. Brown rot can cause no effect on the whole plant, meliorating mellitus can cause the decline of peach trees, and even destroy the tree. Peach brown rot 1 symptoms and causes Peach rot is the main fruit damage, but also endanger flowers, leaves and shoots. When the flower is damaged, the stigma first becomes dark, and gradually spread to the receptacle and pedicel, finally browning and withering, rapidly decaying when the weather is wet, and withered dry but not falling off when dry; the young leaves suffer blackness, weeping, and remain on the branches Do not fall off; shoot damage, the first shoot, then the larger branches produce oval brown spots, and the phenomenon of plastic flow, severe branchlet dead; fruit from young fruits to mature