笔者旨在通过筛选防治番茄茎腐病的有效药剂，为田间防治提供指导。室内测定了5 种杀菌剂对终极腐霉菌丝生长的抑制作用，恶霉灵、唑醚·代森联、硫酸铜钙、甲基硫菌灵和恶酮·霜脲氰为有效杀菌剂。研究结果表明：恶霉灵的EC50为0.364 mg/L，抑菌效果最好；唑醚·代森联效果次之，EC50为9.247 mg/L，其他药剂防治效果相对较差。在田间药剂筛选试验中，70%恶霉灵可湿性粉剂与70%甲基硫菌灵可湿性粉剂组合防治效果为95.57%，均优于其它供试药剂组合，可应用于番茄茎腐病的田间防治。
Abstract
The paper aims to screen out effective fungicides to control tomato basal stem rot and provide guidance for field control. Inhibiting effect of 5 fungicides on the growth of Pythium ultimum was investigated indoor. The test verified that the 5 fungicides, hymexazol, ovraclostrobin·metiram, copper calcium sulphate, thiophanate-methyl and famoxadone·cymoxanil, had control effect on the growth of Pythium ultimum. The results showed that hymexazol had the best antibacterial effect with the EC50 value of 0.364 mg/L, then was ovraclostrobin·metiram with the EC50 value of 9.247 mg/L, other fungicides had poor control efficiency. In field fungicide screening test, the combined control efficiency of 70% hymexazol WP and 70% thiophanate-methyl WP was 95.57%, which was better than other combinations and could be used in field control.
关键词
番茄；终极腐霉；茎腐病；杀菌剂；化学防治
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Key words
Tomato; Pythium ultimum; Basal Stem Rot; Fungicide; Chemical Control
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参考文献
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