4种杀菌剂在秋季马铃薯晚疫病防治中的效果  

Control Effect of Four Fungicides on Late Blight of Autumn Potato

作　　者：丰加文 林知许 邓琳梅 陈晨 王兴国 刘霞[2] FENG Jiawen;LIN Zhixu;DENG Linmei;CHEN Chen;WANG Xingguo;LIU Xia(Malong Agricultural Technology Extension Center,Qujing,Yunnan 655400,China;College of Plant Protection,Yunnan Agricultural University/Key laboratory of Plant Pathology of Yunnan,Kunming,Yunnan 650201,China;Malong Economic Crop Technology Extension Station,Qujing,Yunnan 655400,China)

机构地区：[1]曲靖市马龙区农业技术推广中心,云南曲靖655400 [2]云南农业大学植物保护学院/云南省植物病理重点实验室,云南昆明650201 [3]曲靖市马龙区经济作物技术推广站,云南曲靖655400

出　　处：《中国马铃薯》2023年第3期245-251,共7页Chinese Potato Journal

基　　金：云南省科技厅重大科技专项计划(202102AE090018);云南省现代农业马铃薯产业技术体系(2019KJTX003)。

摘　　要：马铃薯晚疫病危害严重,可侵染不同生育阶段的马铃薯,对产量有较大影响。因此,选用高效低毒的杀菌剂对马铃薯晚疫病防治,对马铃薯安全生产、增加农民收入具有重要意义。为筛选对秋季马铃薯晚疫病防控效果较好的杀菌剂,该研究对目前常用于马铃薯晚疫病防控的4种药剂进行田间药效对比试验,全程施药5次。调查各处理的发病情况,计算发病率、病情指数和防效。4种杀菌剂均有较好的防效,平均防效排序为:687.5 g/L氟吡菌胺·霜霉威SC>10%氟噻唑吡乙酮OD>100 g/L氰霜唑SC>50%烯酰吗啉WP。其中,687.5 g/L氟吡菌胺·霜霉威SC总平均防效最好,为70.90%;10%氟噻唑吡乙酮OD总平均防效次之,为66.53%。因此,在秋季马铃薯种植过程中,可结合实际选用687.5 g/L氟吡菌胺·霜霉威SC和10%氟噻唑吡乙酮OD交替进行防控。Potato late blight is a major disease affecting potato yield and can infect potato at different growth stages.The selection of appropriate fungicides to effectively control potato late blight is of great significance to potato production safety and increase of farmer's income.To select better fungicides for the prevention and control of autumn potato late blight,the field efficacy of four fungicides commonly used in potato late blight prevention and control were compared.The fungicides were applied five times during potato growth period.The incidence of each treatment was investigated,and the incidence,disease index and control effect were calculated.All four fungicides had good control effect,and the ranking of average control effect was 687.5 g/L Fluopicolide propamocarb SC>10%Oxathiapiprolin OD>100 g/L Cyazofamid SC>50%Dimethomorph WP.Among them,the total average control effect of 687.5 g/L Fluopicolide propamocarb SC was the best,which was 70.90%,followed by 10%Oxathiapiprolin OD,which was 66.53%.In potato autumn planting season,687.5 g/L Fluopicolide propamocarb SC and 10%Oxathiapiprolin OD could be used alternately for prevention and control of potato late blight.

关 键 词：秋季 马铃薯 晚疫病 防治效果 杀菌剂 

分 类 号：S532[农业科学—作物学]