当前位置: 首页 > 文章 > 玉米锈病最佳防治时期研究 现代农业科技 2019 (24) 72-74+76
Position: Home > Articles > Study on Best Control Period of Maize Rust Modern Agricultural Science and Technology 2019 (24) 72-74+76

玉米锈病最佳防治时期研究

作  者:
杞国信;何雨伦;李树糁;毕科星;傅杨
单  位:
云南农业大学植物保护学院
关键词:
玉米锈病;防治;最佳时期
摘  要:
本文采用玉米锈病田间系统调查方法和杀菌剂药效试验方法,分别在玉米小喇叭口期、大喇叭口期、开花抽丝期、籽粒形成期进行药剂处理,调查分析玉米锈病发生危害程度及其对产量的影响。结果表明,施药1次处理、施药2次处理、施药3次处理、施药4次处理、清水对照处理在玉米蜡熟期锈病的病情指数分别为28.0、23.3、22.9、17.9、31.0,发病等级分别为2.6级、2.1级、2.1级、1.6级、2.8级,产量分别为12 157.5、12 183.0、12 196.5、12 234.0、11 041.5 kg/hm2。施药1次、2次、3次、4次分别可以挽回产量10.1%、10.3%、10.5%、10.8%。玉米籽粒形成期药剂处理1次是最经济有效的化学农药防治方法,籽粒形成期是玉米锈病最佳防治时期。
译  名:
Study on Best Control Period of Maize Rust
作  者:
QI Guo-xin;HE Yu-lun;LI Shu-shen;BI Ke-xing;FU Yang;College of Plant Protection,Yunnan Agricultural University;
关键词:
maize rust;;control;;optimal period
摘  要:
The field systematic investigation method and fungicide efficacy test method were used to investigate the harmfulness of maize rust and the effect of fungicides on maize yield during the small bell stage,the big bell stage,the flowering and silking stage and the grain formation stage.The results showed that,after application once,second,third,fouth treatment,and the control treatment the disease index of maize wax-ripening rust was28.0,23.3,22.9,17.9,31.0,the disease grade was 2.6,2.1,2.1,1.6,2.8,the yield was 12 157.5,12 183.0,12 196.5,12 234.0,11 041.5 kg/hm2,respectively.The yield could be recovered by 10.1%,10.3%,10.5% and 10.8%,respectively,after application once,second,third,fouth treatment.The most economical and effective method of chemical pesticide control is to treat once in the period of maize grain formation,which is the best period of maize rust control.

相似文章

计量
文章访问数: 41
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊