| 摘要: |
| 分别以25，12，5μg·mL-1的多效唑进行保护性施药即可对条锈病和白粉病达到100%的防效。200μg·mL-1的治疗性施药可铲除寄主体内的条锈菌菌体，并使已形成的孢子堆枯死。25μg·mL-1的治疗性施药可铲除白粉病寄主体内茵体和使体表的菌落崩解。0.05%和0.1%的拌种量防治条锈病和白粉病的持效期分别为50d以上和27d以上，但拌种用量不可超过0.1%以免引起药害。本试验结果表明，多效唑可作为防治小麦条锈病和白粉病的高效药剂，可与其他药剂交替使用。 |
| 关键词: 小麦，条锈病，白粉病，药剂防治，内吸杀菌剂，多效唑 |
| DOI： |
| 分类号:S435.1;S48 |
| 基金项目:国家“八五”攻关项目,杨陵基金,省农办课题资助项目 |
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| Effeets of Paclobutrazel(MET) Controling stripe Rustand Pewdery Mildew |
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| Abstract: |
| Protective applieation with 25μg·mL-1 and 12.5μg·mL-1 of paclobutrazol may completely control the inflcetions caused by puccinia striiformis and Ergsiphe graminis.Curative application with 200μg·mL-1 and 25μg·mL-1 may eradicate the insid epathogen and uredium formed with puccinia striiformis,and the inside and outside
pathogen formed with Ergsiphe graminis/i> in wheat leaves infected respeetively.The durations of effectiveness of seeds treated with 0.05% and 0.1% were over 50 days to the
former and over 27 days to the latter.The amount for seed dressing should be kept lower
than 0.1% for the prevention of fungicide inhitor.The paclobutrazol was regarded as the
highly effcetive fungicide and could be used alternatively with the other fungicides for
the stripe rust and the powery mildew control. |
| Key words: Triticum aestivum,stripe rust(puccinia striiformis),powery mildew(Ergsiphe graminia),protective and curative activities,paclolutrazol |
