| 大丽花白粉病的发生规律及防治研究 |
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| 引用本文： | 王芳,黄碧龙.大丽花白粉病的发生规律及防治研究[J].佛山科学技术学院学报(自然科学版),2000,18(4):77-80. |
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| 作者姓名： | 王芳 黄碧龙 |
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| 作者单位： | 佛山科学技术学院,农学系,广东,南海,528231 |
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| 摘 要： | 大丽花白粉病是大丽花栽培中的重要病害。病原菌以菌丝体在病残体上越冬，借气流和风传播，以分生孢子扩大再侵染。病原菌为真菌寥白粉菌（Erysiphe polygoni DC),药剂防治宜在移载后1个月进行，隔7d喷1次，共2次。试验表明：各药剂间的防效差异显著，以2%的石硫合剂和50%的退菌特800倍液的效果最佳。
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| 关 键 词： | 大丽花 白粉病 病原菌 真菌寥白粉菌 药剂防治 石硫合剂 退菌特 |
A study of the occurrence and control of Dahlia powdery mildew |
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| WANG Fang,HUANG Bi-long.A study of the occurrence and control of Dahlia powdery mildew[J].Journal of Foshan University(Natural Science Edition),2000,18(4):77-80. |
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| Authors: | WANG Fang HUANG Bi-long |
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| Abstract: | Powdery mildew is a serious pest in Dahlia.Pathogeny can survive the winter in disease remaining by hyphae form, spread by airflow and wind, enlarge infection by conidium. Its scientific name is Erysiphe polygoni DC. Germicide protection is correctly done after its transplantation for one month, sprayed continuously twice at intervals of 7 d. It is experimentally indicated that there is remarkable diversity among individual germidides, 0.5% Lime sulphur and 50% Tuzet is superior. |
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| Keywords: | Dahlia powdery mildew pathogeny protection effect |
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