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毛竹枯梢病病原为竹喙球菌 Ceratosphaeria phyllostachydis Zhang。病原菌在 1 0 %毛竹煎汁蔗糖培养基 (B+ S) ,2 5℃ ,1 2小时明暗交替条件下培养 40～ 5 0天孢子量最多。病原菌分泌的毒素是一种还原性多糖 ,是致病的主要成分 ,在 2 0℃～ 2 5℃、振荡、连续黑暗和 p H6条件下培养 1 2天产毒最多。病害的发生与气候和竹林经营管理水平密切相关。通过实施清除病原 ,隔断侵染源、钩梢、垦复施肥、化学防治等综合防治技术 ,建立综合治理工程区 ,使病害发生面积下降了 74.7% ,消灭了严重危害区和中等危害区 ,发病率和病情指数分别下降了 88.6 %和 90 .4%。
The pathogen of blight of bamboo is Ceratosphaeria phyllostachydis Zhang. The most abundant spores of the pathogen were cultured in the medium of 10% bamboo shoots sucrose medium (B + S), 25 ℃ and 12 hours of light and dark. The toxin secreted by the pathogen is a kind of reducing polysaccharide, which is the main component of pathogenicity. It produces most of the virus for 12 days under the condition of shaking, continuous darkness and p H6 at 20 ℃ ~ 25 ℃. The occurrence of diseases is closely related to the climate and the management level of bamboo forests. Through the implementation of a comprehensive prevention and control technology, such as clearing pathogens, isolating infection sources, hooking shoots, reclamation and chemical fertilization, and chemical prevention and control, a comprehensive management project area was established to reduce the area of disease occurrence by 74.7% and eliminate serious and middle-endangered areas Rate and disease index decreased by 88.6% and 90.4% respectively.