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铅笔柏原产北美,是优良的造林和园林绿化树种。我国于本世纪初引种,多年来,已在生产和园林上推广应用,获得成效。 自1983年以来,我省铜山、东台、丹阳等县铅笔柏苗木遭到病菌的严重侵染,遭受重大的经济损失。经几年的研究确定为一种真菌性病害。称之铅笔柏梢枯病,病原菌为桧柏拟茎点菌(Phomopsis juniperovora Hahn)。在我国是新发现的一种毁灭性的苗圃病害。国外称之为铅笔柏疫病(Cedar blight.)。主要分布在美国、加拿大、新西兰及东非的肯尼亚、坦桑尼亚等国。国内已知在江苏、上海及安徽等省市有局部分布。 该病被列入我国尚未发现或分布不广的危险性林木病虫名单(草案)之中。对此病
Pencil originating in North America, is an excellent afforestation and landscaping tree species. Our country introduced at the beginning of this century, over the years, has been in the production and landscape promotion and application of success. Since 1983, Penaeus, seedlings of Tongshan, Dongtai, Danyang and other counties in our province have been seriously infected by bacteria and suffered major economic losses. After several years of research identified as a fungal disease. Known as the pencil cypress blight, the pathogen is cypress cypress (Phomopsis juniperovora Hahn). In our country is a newly discovered disease of a devastating nursery. Abroad is called Cedar Blight. Mainly in the United States, Canada, New Zealand and East Africa, Kenya, Tanzania and other countries. Domestic known in Jiangsu, Shanghai and Anhui provinces and cities are partially distributed. The disease was included in our list of not yet found or widely distributed dangerous pests (draft). This disease