防治溃疡病的几点经验我场是江西最大的脐橙栽培基地，过去由于管理不严，溃疡病为害严重，最严重时叶片发病率高达９７％以上。从１９９２年开始，通过采取一系列综合治理措施，迄今已把叶片发病率控制在０．１％以下，且产量连年大幅度递增，取得了预期的满意效果。现将... Several experiences in the prevention and treatment of ulcer disease My field is the largest navel orange cultivation base in Jiangxi Province. In the past, due to poor management, ulcer disease was severely damaged. In the worst case, the incidence of leaf was as high as 97%. Since 1992, a series of comprehensive measures have been taken so far to control the incidence of leaf diseases below 0.1% and the yield has risen substantially year after year with the expected satisfactory results. Now ...