| 高同春*,马严明,陆悦建,叶钟音.水稻旱育秧立枯病致病菌鉴定及药剂防治研究[J].植物保护,2001,27(6):1-4. |
| 水稻旱育秧立枯病致病菌鉴定及药剂防治研究 |
| Identification and chemical control of pathogens causing rice blight disease on dry-raised rice seedlings |
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| DOI： |
| 中文关键词: 水稻 旱育秧立枯病 致病菌鉴定 防治 |
| 英文关键词:dry-raised seedling blight pathogen identification chemical control |
| 基金项目: |
| 高同春* 马严明 陆悦建 叶钟音 |
| 南京农业大学植物保护学院;南京农业大学植物保护学院;*现工作单位为安徽省农业科学院植保所,合肥,230031 |
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| 中文摘要: |
| 从水稻旱育秧病苗上分离到67个菌株 ,经鉴定分属于镰刀菌58个、腐霉菌7个、丝核菌2个。经回接测定其致病性 ,结果表明致病的镰刀菌主要是串珠镰刀菌 (Fusarium moniliforme) ;腐霉菌中主要是盐腐霉 (Pythium salinum)、间生腐霉 (P .interedium)和顶生腐霉 (P .acrogenum) ;丝核菌为立枯丝核菌 (Rhizoctonia solani)。接种试验表明串珠镰刀菌在6～8d龄幼苗的根中部侵染发病率最高 ,腐霉菌和丝核菌在一叶一心期茎基部侵染发病率最高。药剂试验表明以浸种灵(二硫氰基甲烷)、土菌消(hymexazol)、甲霜灵(metalaxyl)等种子处理加土壤处理 ,防效优于单独种子处理或土壤处理。 |
| 英文摘要: |
| 67 samples were isolated from the dry-raised rice seedbed and then were identified. The results showed that 58 of them were Fusarium, 7 were Pythium and 2 were Rhizoctonia. Their pathogenicity was tested by back-infection, which indicated that pathogens were Fusarium moniliforme, Pythium salinum, P. interedium, P. acrogenum and Rhizoctonia solani. The results also showed that the infection percentage by Fusarium spp. was the highest in the middle of 6-8 days' rice seedling roots, and the highest in the base of roots infected by Pythium spp. and Rhizoctonia spp. during single leaf stage. The results of chemical control showed that seed treatment combined with soil treatment by Jinzhongling (diisothiocyanatomethant), hymexaxol or metalaxyl were more effective than seed or soil treatments alone. |
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