李亚红 张冬英 朱建良 赵俊 罗嵘 桂富荣

摘要 [目的]筛选高效、安全、经济的马铃薯晚疫病防治药剂。[方法]研究了保护性杀菌剂代森锰锌不同用量、不同剂型、用药次数对马铃薯晚疫病的防治效果并进行大面积示范，并与保护性杀菌剂丙森锌、喹啉铜，与复配制剂霜脲·锰锌、氟吡菌胺·霜霉威、丙森锌·霜脲、锌烯酰·吡唑酯、精甲·霜灵以及丙森锌和氟吡菌胺·霜霉威组合对马铃薯晚疫病的防治效果进行了比较。[结果]不同剂型代森锰锌防治差异不大，但防治效果随施药次数的增加而提高;在马铃薯晚疫病已经发生的情况下施用保护性杀菌剂，基本没有任何防治效果。70%丙森锌WP和68.7%氟吡菌胺SC组合以依次各使用2次为宜;2次70%丙森锌WP +3次68.7%氟吡菌胺SC组合防治效果最好。[结论]为开展马铃薯晚疫病防治提供了参考。

关键词 马铃薯晚疫病;防治;试验示范

中图分类号 S435.32  文献标识码 A  文章编号 0517-6611（2015）03-128-03

Control Efficacy of Mancozeb against Potato Late Blight

LI Yahong¹， ZHANG Dongying²， ZHU Jianliang³， GUI Furong²* et al

（1. Yunnan Station of Plant Protection and Quarantine， Kunming， Yunnan 650034; 2. Yunnan Agricultural University， Kunming， Yunnan 650201; 3. Luliang Station of Plant Protection and Quarantine， Luliang， Yunnan 655600）

Abstract [Objective] The aim was to screen out efficient， safe and economic agents for controlling potato late blight. [Method] Control efficacy of Mancozeb against potato late blight under different dosage， different formulations and different applied times was studied and demonstration was carried out， and then comparison tests were carried out with protective fungicides （Propineb and Oxinecopper） and several re preparations. [Result] The control efficacy of Mancozeb of different formulations had no difference， but increased with the increase of applied times. After potato late blight occurred， protective fungicides had no control efficacy basically. The combination of two times 70% Propineb WP and two times 68.7% Fluopicolide SC was suitable， and the combination of two times 70% Propineb WP and three times 68.7% Fluopicolide SC had the best control efficacy. [Conclusion] The results provide reference for control of potato late blight.

Key words Potato late blight; Control; Experiment and demonstration

基金项目 云南省科技创新团队计划项目（2011HC005）;农业公益性行业科研专项（20090351，201003031）。

作者简介 李亚红（1978- ），女，云南昆明人，高级农艺师，从事植保技术与推广工作。*通讯作者，教授，博士，从事农业植保技术研究。

收稿日期 20141119

马铃薯晚疫病是由致病疫霉引起，导致马铃薯茎叶死亡和块茎腐烂的一种毁灭性、重大流行性真菌病害^[1-2]。云南省每年发病面积达200万～300万hm²，占种植面积的20%～30%，损失占总产量的20%左右，是危害全省马铃薯生产的第一大病害^[3-4]。目前關于马铃薯晚疫病防治的药剂种类较多，但在不同地……