13种杀菌剂对水稻细菌性基腐病菌的室内毒力测定

 采用含毒介质法，测定了13种杀菌剂对水稻细菌性基腐病病菌的室内毒力。结果表明：20%亿达枯荣抑菌效果最好，最低有效抑菌浓度为29.00μg/mL；其次是90%瓜爽和72%农用链霉素，最低有效抑菌浓度分别为47.50μg/mL和54.00μg/mL；75%百菌清、枯必治、80%杀菌狂、70%代森锰锌、50%万竞生和77%可杀得，最低有效抑菌浓度为156.50～706.00μg/mL；50%氟吗霜疫克和15％庄园乐水剂最低抑菌浓度均为1125μg/mL；20%叶枯唑抑菌效果较差，最低抑菌浓度为3000.00 μg/mL；80％烟病速克净的抑菌效果最差，抑菌最低有效浓度高达6000.00 μg/mL。

Toxicity Measurement for Thirteen Bactericides to the Causal Organism of Rice Bacterial Foot Rot

The inhibition effects of 13 bactericides on Erwinia chyrsanthemipv. zeae，the pathogen of rice bacterial foot rot, were analyzed with poison media technique in laboratory. The results showed that the best effective bactericides was 20% Octylaminoethyl glycine hydrochloride, with the minimal inhibitory concentration (MIC) of 29.00μg/mL; 72% Srteptomycin and 90% Guashuang (35% streptomycin sulfate: 55% oxytetracycline hydrochloride) ranked the second, with the MIC of 47.50μg/mL and 54.00μg/mL, respectively; for 75% Chlorothalonil, Oxytetracyclini hydrochloridum, 80% Ethylicin, 70% Mancozeb, 50% Copper &; cymotaniland, and 77％ Copper hydroxide, the MIC were from 156.00μg/mL to 706.00μg/mL. However, the MIC for both 50% Fosetyl aluminium &; mancozeb and 15% Manor were 1125.00 μg/mL; 20% Bismerthiazol was 3000.00μg/mL; 80% Yanbingsukejing was the worst effective bactericides with the MIC of 6000.00μg/mL.