| 家蚕中肠型脓病发病规律的研究——Ⅲ.越冬后的中肠型脏病病原弱毒感染的研究 |
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| 引用本文： | 黄可威,陆有华.家蚕中肠型脓病发病规律的研究——Ⅲ.越冬后的中肠型脏病病原弱毒感染的研究[J].蚕业科学,1987(1). |
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| 作者姓名： | 黄可威 陆有华 |
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| 作者单位： | 中国农业科学院蚕业研究所
(黄可威)，中国农业科学院蚕业研究所(陆有华) |
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| 基金项目： | 中国科学院科学基金资助的课题 |
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| 摘 要： | 探讨了存在于泥土地中的家蚕中肠型脓病病原,在室内自然环境中越冬后,对蚕的致病力显著降低.收集经越冬的病原添食感染后无病征出现的五龄蚕后期蚕粪,应用生测法检查有病原性,应用C.B.B法检查有多角体(CPB)存在.农村蚕室调查也表明.春蚕期虽未发现中肠型脓病,但在中秋蚕期,仍有该病出现.可以认为,多数是由于春蚕带毒蚕粪污染环境成为下一蚕期发病的感染源,并提出相应的预防对策.
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| 关 键 词： | 家蚕 中肠型脓病 弱毒感染 |
Studies on the Law of Occurencee of Cytoplasmic Polyhedrosis of the Silkworm, Bombyx mori L. : Ⅲ. Studies on the Attenuated Infection of the Pathogen of Cytoplasmic Polyhedrosis after Hibernation |
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| Huang Kewei.Studies on the Law of Occurencee of Cytoplasmic Polyhedrosis of the Silkworm, Bombyx mori L. : Ⅲ. Studies on the Attenuated Infection of the Pathogen of Cytoplasmic Polyhedrosis after Hibernation[J].Acta Sericologica Sinica,1987(1). |
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| Authors: | Huang Kewei |
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| Institution: | Huang Kewei |
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| Abstract: | This experiment probed into the problem of the infectivity of the pathogen of cytoplasmic polyhedrosis of silkworm which existing in soil in room nautural environment after hibernation. Silkworm feces of 5th instar later stage after feeding infected by pathogen of hibernation and no disease spot appear were collected. Examination by bioassay methods found the existing pathogenicity but by C. B. B. methods the polyhedra persent. Countryside investigation of the silkworm rearing indicated that in spring rearing season there is no cytoplasmic polyhedrosis exitsed but in middle autumn rearing season this disease occurred.The environemt which contaminated by the patho gen-earring faces of spring rearin silkworm may be the main cause of the occurrene of cytoplasmic polyhedrosis in next rearing seasoni Proper controlling measure had been suggested. |
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| Keywords: | Bombyx mori Cytoplasmic polyhedrosis |
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