摘要
[目的]为明确新型杀菌剂200 g/L氟唑菌酰羟胺·苯醚甲环唑SC对玫瑰白粉病的田间防治效果。[方法]采用茎叶喷雾处理的方法,对农业生产中常用的3种杀菌剂进行田间药效试验。[结果]200 g/L氟唑菌酰羟胺·苯醚甲环唑SC 900、1350 mL/hm^(2)和35%氟吡菌酰胺·戊唑醇SC 675 mL/hm^(2)对玫瑰白粉病均有较好防效,末次药后21 d的防效分别为81.37%、91.70%、79.29%。在测试的药剂中,250 g/L吡唑醚菌酯EC 600 mL/hm^(2)对玫瑰白粉病的防效最差,末次药后21 d的防效仅为36.37%。[结论]200 g/L氟唑菌酰羟胺·苯醚甲环唑SC对玫瑰白粉病具有较好的防效。在白粉病发生压力相对较轻时,推荐使用剂量为900 mL/hm^(2);在发生迅速且发生压力较高的情况下,可推荐使用1350 m L/hm^(2)以达较为优异的防效。
[Aims]This study aims to clarify the field control efficacy of a new fungicide pydiflumetofen·difenoconazole200 g/L SC against powdery mildew on rose.[Methods]Field efficacy trials of 3 fungicides commonly used in agricultural production were carried out by the method of spraying fungicideson stems and leaves.[Results]Pydiflumetofen·difenoconazole 200 g/L SC 900,1350 mL/ha and fluopyram·tebuconazole 35%SC 675 mL/ha had good control effects againstpowderymildewonrose.Thecontroleffectsofthemwere81.37%,91.70%and79.29%21 daysafterthelastapplication.Among the tested fungicides,pyraclostrobine 250 g/L EC 600 mL/ha had the worst control effect against powdery mildew on rose.The control effect was only 36.37%21 days after the last application.[Conclusions]Pydiflumetofen·difenoconazole 200 g/LSChas good control effect against powderymildewon rose.When the disease pressure of powdery mildew is relatively light,the recommended dosage of pydiflumetofen·difenoconazole 200 g/L SC is 900 mL/ha.To obtain excellent control effect,the recommended dosage is 1350 mL/ha when the disease pressure is high and the disease occurs rapidly.
作者
文君慧
姚贝贝
朱祺
蒋田田
徐清华
钟国华
WEN Jun-hui;YAO Bei-bei;ZHU Qi;JIANG Tian-tian;XU Qing-hua;ZHONG Guo-hua(Key Laboratory of Integrated Pest Management of Crop in South China,Ministry of Agriculture and Rural Affairs,South China Agricultural University,Guangzhou 510642,China;Syngenta(China)Investment Co.,Ltd.,Shanghai 200120,China)
出处
《农药》
CAS
CSCD
北大核心
2022年第8期607-610,共4页
Agrochemicals
