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美国布朗系列李是有较强竞争力的优质水果 ,但近年来遭细菌性穿孔病为害逐渐加重 ,造成大量落叶和枝梢枯死 ,甚至整株死亡。 1 998～1 999年 ,笔者对布朗李细菌性穿孔病的发生规律及防治技术进行了探讨 ,取得初步结果。1 症状表现 细菌性穿孔病主要为害叶片、枝梢。叶片发
The United States of America Brown Series Lee is a relatively competitive high-quality fruit, but bacterial perforation in recent years, the damage gradually increased, resulting in a large number of deciduous leaves and shoots died, or even whole plant died. From 1998 to 1999, the author explored the occurrence and prevention and cure of Bacillus perforation of Brown Lee and achieved preliminary results. 1 symptoms of bacterial perforation mainly damage leaves, shoots. Leaf hair