CAJ | 학술논문

为了筛选对甘薯黑痣病防效良好的药剂，首先采用滤纸片法在室内测定了1种生防菌剂和21种化学杀菌剂对甘薯黑痣病菌的抑菌作用，结果表明，咯菌腈、咪鲜胺、多菌灵和枯草芽孢杆菌表现出较好的抑菌效果，在50 mg／L质量浓度下抑菌圈直径分别为4.75 cm、1.55 cm、1.20 cm和3.60 cm。用以上4种杀菌剂分别处理带病种薯、秧苗、土壤，进行甘薯黑痣病的田间防治试验，结果显示，枯草芽孢杆菌的效果不及3种化学药剂，咪鲜胺的效果最佳，其处理带病种薯的病苗防效为88.1％，处理秧苗、土壤的病指防效达到83.8％和97.4％。
위료사선대감서흑지병방효량호적약제，수선채용려지편법재실내측정료1충생방균제화21충화학살균제대감서흑지병균적억균작용，결과표명，각균정、미선알、다균령화고초아포간균표현출교호적억균효과，재50 mg／L질량농도하억균권직경분별위4.75 cm、1.55 cm、1.20 cm화3.60 cm。용이상4충살균제분별처리대병충서、앙묘、토양，진행감서흑지병적전간방치시험，결과현시，고초아포간균적효과불급3충화학약제，미선알적효과최가，기처리대병충서적병묘방효위88.1％，처리앙묘、토양적병지방효체도83.8％화97.4％。
To screen for germicides effectively controlling Monilochactes infuscans on sweet pota-to,the inhibiting effects of an antagonistic bacterium Bacillus subtilis and 2 1 chemical germicides on M.infuscans were firstly determined by filter paper method.The result showed that fludioxo-nil,prochloraz,carbendazim and Bacillus subtilis had a significant inhibition effect,and the inhibi-tion diameters were 4.75 cm,1.55 cm,1.20 cm and 3.60 cm,respectively at the concentration of 50 mg/L.The field trials were done with the four germicides treating infected seed tubers,seed-lings and soil,respectively,and the results showed that the control effect of Bacillus subtilis was inferior to the three chemical germicides on M.infuscans.The control effect of prochloraz was the best,with effects of 88.1%,83.8% and 97.4% when treating infected seed tubers,seedlings and soil,respectively.