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苹果腐烂病,属于一种真菌病害。主要危害结果树,幼树、小苗发病较轻。其危害症状可分为溃疡型和枯枝型。溃疡是苹果树发病的主要症状,多发生于主干、主侧枝的枝杈处。发病初期,病部呈红褐色,形状不规则,稍有隆起,皮层组织变软,水渍状,易撕破,有酒糟味,导致大面积树皮腐烂。枯枝型多发生于长势衰弱的枝上,以及果台、干桩剪口等处。腐烂病的菌丝体、分生孢子、孢子角及子囊壳在树皮内越冬。病菌的孢子随雨水溅落或随风传播,腐烂病菌的寄生能力弱,多从伤口、叶痕、皮孔、叶柄等部位侵入而发病。我省北方发病高峰多在3月下旬
Apple rot disease, belonging to a fungal disease. The main endanger the results of trees, young trees, young seedlings less severe. Its harmful symptoms can be divided into ulcer and dead branches. Ulcer is the main symptom of the onset of apple trees, occurs in the trunk, the main branches of the branches. Early onset, the disease was reddish brown, irregular shape, a slight bulge, cortical tissue softened, water-like, easy to tear, a wine taste, leading to large-scale bark decay. Dead branches occur in the growing weak branches, as well as the fruit Taiwan, dry stabbed scissors and other places. Rotten mycelium, conidia, spore angle and ascus shell overwintering in the bark. Spores germs splashed with the rain or spread with the wind, rot bacteria weak parasitic capacity, and more from the wounds, leaf marks, lenticels, petioles and other parts of the invasion. Northern peak incidence in our province in late March