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腐烂病又叫烂皮病,在我区普遍发生,除危害核桃、梨树外,还可危害苹果、桃、杏树等。一、发病症状腐烂病症状分湿腐型和干腐型2种。1.湿腐型又称溃疡型,多发生于3月底~6月中旬,高峰期在5月中旬,在早春发病初期,病斑为暗褐色水渍状大块斑,病部略肿胀,用手一压可流出红褐色汁液,有甜味和酒味,病皮组织腐解,皮层坏死。2.干腐型又称枝枯型,发生在7月初,随气温升高,病斑组织水分迅速蒸发,因输导组织坏死,不能供给水
Rot disease, also known as rotten skin disease, occurs in our district, in addition to endangering walnuts, pear tree, but also endanger the apple, peach, apricot and so on. First, the symptoms of symptoms of rot disease sub-wet rot and dry rot 2 kinds. 1. Wet decay type, also known as ulcer, occurred in late March to mid-June, the peak in mid-May, early in the early spring onset, the lesion was dark brown water-like massive plaque, the disease slightly swollen with Hand pressure can flow out of the red-brown juice, a sweet and wine taste, diseased diseased tissue, cortical necrosis. 2 dry rot, also known as twig type, occurred in early July, with the temperature increased, the rapid evaporation of the lesion tissue moisture, tissue necrosis due to guidance, can not supply water