| 烟草黑胫病田间动态研究 |
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| 引用本文： | 周嘉平,王宝华. 烟草黑胫病田间动态研究[J]. 植物病理学报, 1984, 14(1): 39-45 |
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| 作者姓名： | 周嘉平 王宝华 |
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| 作者单位： | 中国农业科学院烟草研究所 |
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| 摘 要： | 雨水在黑胫病的重复侵染上起重要作用。烟茎上的孢子囊被雨水冲刷到地面上,释放出大量的游动孢子,随地面活水进行侵染。孢子囊只产生在较幼嫩的组织上,主要着生在烟茎顶端,其次在茎中部,茎基部分则极少发现。山东夏烟产生孢子囊的主要时期为移栽(6月底至7月初)以后到7月下旬。连续大雨有利于产生孢子囊。人工接种后4~5天是产生孢子囊的高峰。
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FIELD OBSERVATION ON THE EPIPHYTOLOGY OF TOBACCO BLACK SHANK [PHYTOPHTHORA PARASITICA F.NICOTIANA(BREDA DE HAAN)TUCKER] |
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| Zhou Jiaping,Wang Baohua. FIELD OBSERVATION ON THE EPIPHYTOLOGY OF TOBACCO BLACK SHANK [PHYTOPHTHORA PARASITICA F.NICOTIANA(BREDA DE HAAN)TUCKER][J]. Acta Phytopathologica Sinica, 1984, 14(1): 39-45 |
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| Authors: | Zhou Jiaping Wang Baohua |
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| Affiliation: | Institute of Tobacco Research, Academy of Agricultural Science of China |
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| Abstract: | 1.Rainfall,which plays an important role in the subsequent secondary infections of black shank,is the most important factor for epiphytotics.Heavy rainfall always washes down the sporangia from diseased plants and sinks them into the soil.Whereby the rain water will spread and run over the field surface together with the inoculum. |
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