中国烟草科学2026，Vol.47Issue(2)：69-75,7.DOI:10.13496/j.issn.1007-5119.2026.02.009
防治烟草根茎类病害包衣剂有效成分的筛选
Screening of Effective Components of Coating Agents for Root and Stem Disease Control of Tobacco
摘要
Abstract
To screen the safe and effective ingredients of coating agents for controlling tobacco rhizome diseases,the effects of four chemical fungicides(fludioxonil,tebuconazole,thifluzamide,difenoconazole),one plant growth regulator(brassinolide)and five biocontrol agents(Genkangzhuang,Heigenling,Miaoqiangzhuang,YX72,YX53)on tobacco seed germination and disease resistance were investigated by means of seed soaking and spore suspension root irrigation inoculation.The results showed that Genkangzhuang exhibited the best control efficacy against tobacco black shank and root rot caused by Fusarium oxysporum,with the relative control effects reaching 55.00%and 45.35%,respectively,which were higher than those of other treatments.However,this biocontrol agent showed no significant control effect on root rot caused by Fusarium solani,and exerted certain adverse effects on tobacco seed germination and seedling growth:the fresh and dry mass of above-ground parts were reduced by 21.96%and 0.72%,respectively,compared with the sterile water control.Brassinolide presented a significantly stronger growth-promoting effect than other agents,with the fresh and dry mass of above-ground parts and roots increased by 93.46%,428.95%,187.77%and 277.78%,respectively,while its control efficacy against tobacco black shank and F.oxysporum root rot was relatively low,only 16.67%and 11.63%,respectively,and it even posed a risk of exacerbating the severity of F.solani root rot.The combined seed soaking treatment with brassinolide and Genkangzhuang achieved a relative control effect of 54.38%against F.oxysporum root rot,which was higher than that of Genkangzhuang alone.No significant differences were observed in the disease severity of tobacco black shank and F.solani root rot between the combined treatment group and the control group.Moreover,the combined treatment significantly promoted the fresh mass accumulation of tobacco plants,with the fresh mass of above-ground parts and roots increased by 25.65%and 45.00%,respectively.In conclusion,the combined seed soaking treatment with Genkangzhuang and brassinolide integrated the disease control capacity of Genkangzhuang and the growth-promoting effect of brassinolide.It could effectively control F.oxysporum root rot while significantly promoting tobacco seedling growth,but its effects on tobacco black shank and F.solani root rot deserve further investigation.关键词
烟草根茎类病害/烟草疫霉/尖孢镰刀菌/茄病镰刀菌/包衣剂Key words
root and stem diseases of tobacco/Phytophthora parasitica var.nicotianae Tucker/Fusarium oxysporum/F.solani/coating agents分类
农业科技引用本文复制引用
邱睿,张盈盈,王雪芬,李成军,李小杰,李彩虹,蒲团卫,李淑君..防治烟草根茎类病害包衣剂有效成分的筛选[J].中国烟草科学,2026,47(2):69-75,7.基金项目
中国烟草总公司揭榜挂帅项目[110202201026(LS-10)] （LS-10）
河南省农业科学院科技创新团队项目(2025TD42) （2025TD42）
中国烟草总公司重大科技项目[110202101051(LS-11)]、[110202401013(LS-03)] （LS-11）
