CAJ | 학술논문

采用菌丝生长速率法在室内测定了6种杀菌剂对甘薯黑斑病菌（ Ceratocystis fimbriata Ellis et Halsted）的毒力，结果表明，1％枯草芽孢杆菌可湿性粉剂和2％宁南霉素对甘薯黑斑病菌菌丝生长的抑制效果居前2位，其中后者对该病菌的EC50值为0．30μg/mL。探讨了7种药剂对甘薯苗期黑斑病的防治效果，结果显示：以50％甲基托布津可湿性粉剂800倍液对苗期黑斑病的防治效果最佳，防效达100％。
채용균사생장속솔법재실내측정료6충살균제대감서흑반병균（ Ceratocystis fimbriata Ellis et Halsted）적독력，결과표명，1％고초아포간균가습성분제화2％저남매소대감서흑반병균균사생장적억제효과거전2위，기중후자대해병균적EC50치위0．30μg/mL。탐토료7충약제대감서묘기흑반병적방치효과，결과현시：이50％갑기탁포진가습성분제800배액대묘기흑반병적방치효과최가，방효체100％。
The indoor toxicities of six fungicides to Ceratocystis fimbriata Ellis et Halsted were tested by using mycelial growth rate method.The results showed that:among the tested 6 fungicides, 1%Bacillus subtilis WP and 2%Ningnanmycin had the top 2 inhibitory effect on the mycelial growth of Ceratocystis fimbriata, and the EC50 value of the latter against this pathogen was 0.30μg/mL.The control effects of 7 kinds of fungicides on the black spot of sweet potato seedlings were studied.The results indicated that the 800-times dilution of 50%Topsin-methyl WP had the best control effect on this disease of sweet potato at seedling stage , and its control effect reached 100%.