摘要
为了筛选防治甜菜褐斑病的高效杀菌剂,2012年在海伦地区采用大区对比试验进行了甜菜褐斑病田间防治研究。结果表明,5种杀菌剂对甜菜褐斑病均有不同程度的防效,其中,苯醚甲环唑和吡唑醚菌酯对甜菜褐斑病防治效果最好,达70%以上,并且可显著增加产量,吡唑醚菌酯较对照区增产23.6%,苯醚甲环唑较对照增产11.8%。两种杀菌剂对块根含糖率影响不大,可提高含糖率约1度。这两种杀菌剂在甜菜生育期只需喷施2次,7月中下旬田间发病初期进行第一次喷药,间隔约10天进行第二次喷药。田间未发现药害现象,甜菜叶片生长旺盛。表明苯醚甲环唑和吡唑醚菌酯为当地防治甜菜褐斑病的高效杀菌剂。
For screening high-efficiency fungicide against Cercospora leaf spot （CLS） which is the most devastating foliar disease of sugar beet at present, the plots contrast experiment in the field was conducted in Hailun region in 2012. The results showed that efficacy of 5 kinds of fungicides against CLS disease was different. The effect of Difenoconazole and Pyraclostrobin against CLS were the best up to 70%. And sugar beet yield after Pyraclostrobin and Difenoconazole sprayed was significantly increased by 23.6% and 11.8%. Sugar content in tuberous root was not significantly different about enhanced by 1% The CLS disease at the initial stage was controlled by spraying Difenoconazole and Pyraclostrobin two times in middle or late July with an interval of 10d. The phenomena of phytotoxicity didn＇t occur in field and leaves of sugar beet grew well. Difenoconazole and Pyraclostrobin were as the best fungicides against CLS disease in 5 kinds of fungicides in the locality.
出处
《中国糖料》
2013年第3期62-63,65,共3页
Sugar Crops of China
基金
国家甜菜现代产业技术体系建设(CARS-210406)
国家科技富民强县专项行动计划资助
关键词
甜菜褐斑病
杀菌剂
防治效果
产量
糖锤度
Cercospora leaf spot of sugarbeet
fungicide
control efficacy
yield
brix
