【摘要】 用生长速率法测定了咯菌腈、多菌灵、硫菌·霉威、苯醚甲环唑 4种药剂对草莓灰霉病Botrytiscinerea的毒力。结果表明 ,4种药剂对草莓灰霉菌菌丝的生长都有不同程度的抑制作用 ,随药剂浓度增加抑制作用增强 ,其 EC50 值分别为 0 .0 4 72、95 .7193、0 .4 85 4、1.36 11mg/ L,其中咯菌腈的毒力最强。田间防治试验结果表明 :2 .5 %咯菌腈 FC每 6 6 7m2 施药量 12 0 m L时防效为 83.7% ,80 m L时防效为 6 7.7% ;6 5 %硫菌·霉威 WP每 6 6 7m2 施药量 10 0 g时防效为 6 5 .3%。更多还原

【Abstract】 Toxicity of fungicides carbendazim, thiophanate methyl+diethofencarb, difenoconazole, fludioxonil on Botrytis cinerea Pres.which causes gray mold of strawberry, was studied by using growing rate method. It was shown that the four fungicides have different effects in inhibition against Botrytis cinerea on strawberry and the effect is dependent on concentration of fungicides. The EC 50 of fludioxonil carbendazim, thiophanate methyl+diethofencarb, difenoconazole was 0.0472, 95.7193, 0.4854 and 1.3611 mg/mL, respectively. Among the four fungicides, the toxicity of fludioxonil is the highest. The field trial indicated that the control effect of 2.5% fludioconil against the pathogen were 83.7% and 67.7% at the concentration of 120 and 80 mL/667m 2, 65% thiophanate methyl+diethofencarb WP was 65.3% at the concentration of 100g/667 m 2.更多还原