杏树细菌性穿孔病分布范围较广,如防治不及时,常造成杏树大量落叶和落果,削弱树势,影响产量,甚至导致树梢枯死。1症状该病可危害杏树的叶片、枝条和果实。①叶片患病症状。发病初期,先产生多角形水渍状斑点,以后扩大为圆形或不规则形褐色病斑病斑边缘水渍状。后期水渍状边缘消失,病斑干枯、脱落或部分与病叶相连,形成直径为0.5~5毫米的穿孔。病叶极易早期脱落。②果实患病症状。果皮上先产生水渍状小点,扩 Apricot bacterial perforation distribution of a wide range, such as prevention and treatment is not timely, often resulting in a large number of almond leaves and deciduous fruit, weakening the tree vigor, affecting yield, and even lead to dead trees. 1 Symptoms The disease can harm apricot tree leaves, branches and fruits. ① leaf symptoms. Early onset, first produce polygonal water-like spots, later expanded to a circular or irregular brown spot lesions spot edge water stains. The late edge of water-like stain disappeared, spots dry, shedding or diseased leaves and some connected to form a diameter of 0.5 to 5 mm perforation. Sick leaves easily fall off early. ② fruit sick symptoms. Peel the first to produce water-like dots, expand