42.4%唑醚·氟酰胺SC对马铃薯早疫病的田间防效评价  

Efficacy of Fluxapyroxad·Pyraclostrobin 42.4% SC against Potato Early Blight

作　　者：张丽荣[1] 郭成瑾[1] 沈瑞清[1] 朱建祥 

机构地区：[1]宁夏农林科学院植物保护研究所,银川750002 [2]宁夏石嘴山市惠农区农技中心,宁夏石嘴山753600

出　　处：《农药》2016年第12期934-936,共3页Agrochemicals

基　　金：宁夏农林科学院自主研发项目(NKYG-14-11);公益性行业(农业)科研专项(201503112)

摘　　要：[目的]明确42.4%唑醚·氟酰胺SC在推荐使用剂量下防治马铃薯早疫病的效果,为生产上安全应用提供理论依据。[方法]采用"DMRT"法进行方差分析,并用邓肯氏新复极差法检验差异显著性。[结果]3次施药后10 d,42.4%唑醚·氟酰胺SC 112.5、150 g a.i./hm^2对马铃薯早疫病防效为86.33%~90.17%;42.4%唑醚·氟酰胺SC 75 g a.i./hm^2与300 g/L氟唑菌酰胺SC防效相当,高于250 g/L醚菌酯EC和50%啶酰菌胺WG的防效。[结论]42.4%唑醚·氟酰胺SC对马铃薯早疫病具有较好的防治效果,建议发病初期施用,推荐使用剂量为112.5~150 g a.i./hm^2。[Aims] This study aims to illuminate the effect of fiuxapyroxad-pyraclostrobin 42.4% SC at recommended dosage on potato early blight and to provide the basis for security application in yield. [Methods] The data was analyzed by variance ＂DMRT＂ method and Duncan-style with new multiple ranges to test the significance of differences. [Results] The results showed that 10 days after three times of applying pesticide, the control effects of fluxapyroxad-pyraclostrobin 42.4% SC at 112.5 and 150 g a.i./ha on potato early blight are ranging from 86.33 to 90.17%. The control effect at 75 g a.i./ha is higher than that of pyraclostrobin EC and boscalid 50% WG at 250 g/L, and is equivalent to that of fiuxapyroxad SC at 300 g/L. [Conclusions] The potato early blight disease could be effectively controlled by fluxapyroxad-pyraclostrobin 42.4% SC, especially at initial infection stage treated with the recommended dose of 112.5-150 g a.i./ha in the fields.

关 键 词：42.4%唑醚·氟酰胺SC 马铃薯早疫病 防治效果 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]