防治火龙果溃疡病的药剂筛选及田间应用  

Effective Fungicides Screening and Field Application Effects against Pitaya Canker

作　　者：林珊宇[1] 贤小勇[1] 朱桂宁[1] 韦小妹 钟有超 黄黎芳[3] LIN Shan-yu;XIAN Xiao-yong;ZHU Gui-ning;WEI Xiao-mei;ZHONG You-chao;HUANG Li-fang(Guangxi Academy of Agricultural Sciences Institute of Plant Protection,Guangxi Key Laboratory for Biology of Crop Diseases and Insect Pests ,Nanning530007,China;Guangxi Academy of Agricultural Sciences Horticultural Research Institute,Nanning 530007,China;Gaofeng Dragon Fruit Experiment Station of Qinzhou,Qinzhou 535029,Guangxi,China)

机构地区：[1]广西农业科学院植物保护研究所广西作物病虫害生物学重点实验室,南宁530007 [2]钦州高丰火龙果试验站,广西钦州535029 [3]广西农业科学院园艺研究所,南宁530007

出　　处：《农药》2018年第12期921-924,共4页Agrochemicals

基　　金：广西科学研究与技术开发计划(桂科攻1598006-5-12);广西自然科学基金(2017GXNSFBA198237);广西农业科学院基本科研业务专项(2015YT45);广西农业科学院科技发展基金(桂农科2016YM50);广西科技重大专项(桂科AA17204097-10)

摘　　要：[目的]筛选对火龙果溃疡病具有良好防治作用的杀菌剂。[方法]采用菌丝生长速率法筛选抑菌效果突出的杀菌剂,利用喷雾法进行田间防治试验。[结果] 42.4%吡唑醚菌酯·氟唑菌酰胺悬浮剂、50%咪鲜胺锰盐可湿性粉剂、35%氟吡菌酰胺·戊唑醇悬浮剂对火龙果溃疡病菌菌丝生长的毒力较强,EC50值分别为0.0575、0.1512、0.5639 mg/L。田间试验表明,42.4%吡唑醚菌酯·氟唑菌酰胺悬浮剂田间对火龙果茎和果实溃疡病最高防效分别达89.07%、92.72%。[结论] 42.4%吡唑醚菌酯·氟唑菌酰胺悬浮剂对火龙果溃疡病具有很好的防效,可作为田间防治火龙果溃疡病的有效药剂。[Aims] The study aims to screen out effective fungicides against pitaya canker. [Methods] Fungicides were selected by mycelial growth rate and field trials were carried out by spraying method. [Results] Pyraclostrobin·epoxiconazole 42.4% SC, prochloraz-manganese chloride complex 50% WP and fluopyram·tebuconazole 35% SC performed excellent activity in inhibiting the mycelia growth with EC50 values of 0.0575, 0.1512 and 0.5639 mg/L,respectively. The results of field trials revealed that pyraclostrobin·epoxiconazole 42.4% SC could control the pitaya canker efficiently, and displayed the best control efficacy of 89.07% on stem canker and 92.72% on fruit canker,respectively. [Conclusions] Pyraclostrobin·epoxiconazole 42.4% SC had good activity against pitaya canker and can be used for controlling pitaya canker in field.

关 键 词：火龙果溃疡病 吡唑醚菌酯 氟唑菌酰胺 毒力测试 田间防效 

分 类 号：S482.2[农业科学—农药学]