摘要
为进一步明确40%丙硫菌唑·戊唑醇悬浮剂田间防效,为合理使用提供科学依据,以济麦229为试验材料,通过设置不同用药量和不同用药次数的小麦田间试验,研究其对小麦白粉病田间防效和产量的影响。结果表明,使用该药剂450、675、900 mL/hm^(2)(制剂用药量)于扬花末期喷施1次,对小麦白粉病田间防效依次为37.06%、47.25%和50.00%;于扬花初期、末期间隔8 d喷施2次,对小麦白粉病防效依次为61.27%、72.60%和84.84%。喷施该杀菌剂能够显著提高小麦千粒重和产量,与不喷施对照相比,喷施1次增产比例分别为18.54%、21.49%和22.13%,喷施2次增产比例分别为23.77%、25.05%和28.43%。防治小麦白粉病可根据发病程度,使用40%丙硫菌唑·戊唑醇悬浮剂在扬花初期和末期连喷2次,增产效果明显。
In order to further clarify the field control efficacy of 40%prothioconazole·tebuconazole suspension agent and provide scientific basis for rational use,taking Jimai 229 as the test material,this paper set a test of different doses and different application times in wheat field,and studied the effects on the field control efficacy of wheat powdery mildew and yield.The results showed that field control efficacy of wheat powdery mildew were 37.06%,47.25%and 50.00%,respectively,when 450,675 and 900 mL/hm^(2)(dosage of preparation)were sprayed at the late flowering stage;spraying twice at the early and late flowering stages,the control efficacy of wheat powdery mildew were 61.27%,72.60%and 84.84%,respectively.Spraying the fungicide could significantly increase the 1000-grain weight and yield of wheat.Compared with no spraying control,the proportion of increasing yield of spraying once was 18.54%,21.49%and 22.13%respectively,and the proportion of increasing yield of spraying twice was 23.77%,25.05%and 28.43%respectively.According to the degree of disease,40%prothioconazole·tebuconazole suspension agent can be applied twice at early and late flowering stages to control wheat powdery mildew,and the yield increase effect is obvious.
作者
张志伟
魏秀华
于海涛
宋顺
刘亚男
张桂珍
张国栋
王文华
王开周
ZHANG Zhiwei;WEI Xiuhua;YU Haitao;SONG Shun;LIU Yanan;ZHANG Guizhen;ZHANG Guodong;WANG Wenhua;WANG Kaizhou(Weifang Academy of Agricultural Sciences,Weifang Shandong 261071;Kaizhou District Agricultural Development Service Center of Chongqing City,Chongqing 405499)
出处
《现代农业科技》
2023年第17期93-96,共4页
Modern Agricultural Science and Technology
基金
国家现代农业产业技术体系项目(CARS-03)。
关键词
小麦
丙硫菌唑
戊唑醇
白粉病
田间防效
产量
wheat
prothioconazole
tebuconazole
powdery mildew
field control efficacy
yield
