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首页> 外文期刊>Quarterly Journal of Forestry >HOW SERIOUS IS BACTERIAL BLEEDING CANKER: A CASE STUDY
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HOW SERIOUS IS BACTERIAL BLEEDING CANKER: A CASE STUDY

机译:严重的细菌性溃疡病的案例研究

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In the second part of this feature Terry Mabbett looks in detail at how bacterial bleeding canker is affecting a typical group of horse chestnuts in north London. Within five years of first widespread appearance (2000) Forest Research estimated 50,000trees out of a UK population of around 1 to 2 million horse chestnuts were already infected with bacterial bleeding canker. The latest survey of 2600 trees nationwide conducted by the Forestry Commission and announced-in April 2008 showed almost half (49%) of trees surveyed carried symptoms. The worst affected area was south east England where over 70% of trees had symptoms. So just how serious is bacterial bleeding canker. the green leaves of 2008 have unfolded revealing bare branches and damage doneduring the record wet late spring and summer of 2007. Serious and worsening by the day is not an alarmist description of bacterial bleeding canker's damage to horse chestnut.
机译:在此功能的第二部分中,特里·马贝特(Terry Mabbett)详细研究了细菌性溃疡病如何影响伦敦北部典型的七叶树。在首次广泛出现的五年内(2000年),森林研究公司估计,英国约有1-2百万匹七叶树种群中有50,000棵树已经感染了细菌性出血性溃疡。林业委员会对全国2600棵树木进行了最新调查,并于2008年4月宣布,结果显示,几乎有一半(49%)的树木带有症状。受灾最严重的地区是英格兰东南部,那里超过70%的树木有症状。因此细菌性出血病的严重程度如何。 2008年的绿叶已经露出来,露出裸露的树枝和损害,这是2007年春末和夏末潮湿的记录。白天的严重和恶化并不是对细菌性出血性溃疡对七叶树的损害的警觉性描述。

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