戊唑醇与苯醚甲环唑混配对橡胶树炭疽病菌的联合毒力

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戊唑醇与苯醚甲环唑混配对橡胶树炭疽病菌的联合毒力

作者：郑肖兰易克贤吴伟怀习金根郑金龙袁鸾英梁艳琼贺春萍

来源：《热带农业科学》2014年第09期

摘要采用室内生长速率法，研究戊唑醇和苯醚甲环唑混配对橡胶树炭疽病菌的增效作用。结果表明，不同配比的戊唑醇和苯醚甲环唑对橡胶炭疽病菌的联合作用表现为拮抗性、加和性及增效性3种不同作用，不同的炭疽病菌株对同种配比的药剂表现出不同的敏感性。戊唑醇与苯醚甲环唑以1∶3混配对胶孢炭疽菌RC178的增效最明显；1∶3和2∶5混配时，对尖孢炭疽菌RC169增效最佳；2∶5混配时，对胶孢炭疽菌RC227增效最优。

关键词炭疽菌；戊唑醇；苯醚甲环唑；联合作用

分类号 S763.7

Co-toxicity of Tebuconazole and Difenoconazole against

Colletotrichum sp. on Rubber Tree

ZHENG Xiaolan1） YI Kexian1） WU Weihuai1） XI Jingen1） ZHENG Jinlong1）

YUAN Luanying2） LIANG Yanqiong1） HE Chunping1）

（1 Institute of Environment and Plant Protection， CATAS， Haikou，Hainan 571101，China

2 College of Environment and Plant Protection， Hainan University， Haikou， Hainan 570228，China）

Abstract The synergistic activity of tebuconazole/ difenoconazole complex against the Colletotrichum of rubber tree was studied based on the mycelial growth method. The result showed that the combined effect of different proportions of tebuconazole and difenoconazole on Colletotrichum of rubber tree performance for three different effects of antagonistic， additive and synergistic. The strains of Colletotrichum agents on the same proportion showed different sensitivity. The mixtures with the ratio of tebuconazole and difenoconazole as 1：3 for C. gloeosporioides RC178 synergistic most obvious； when the ratio with 1：3 and 2：5 for C. oxysporum RC169 were best efficiency ； and the ratio of 2：5 for C. gloeosporioides RC227 was optimal efficiency.

Keywords Colletotrichum ； ebuconazole ； difenoconazole ； joint action