三环唑可湿性粉剂不同施用方法防治水稻稻瘟病效果比较

Comparison of the Effects of Different Application Methods of Tricylazole Dissolvable Dust on Rice Blast Control

【目的】比较三环唑可湿性粉剂不同施用方法防治稻瘟病效果,为技术推广提供依据。【方法】共设两大项处理,试验处理1设置三个不同剂量的三环唑可湿性粉剂对秧苗移栽前进行撒施处理;试验处理2对水稻蘖盛期和孕穗期用有效成分为281.25g/hm2三环唑可湿性粉剂进行传统叶面喷雾,喷撒清水为空白对照。【结果】三环唑可湿性粉剂撒施有效剂量为843.75g/hm2时对水稻叶瘟的防治效果为71.02%,传统叶面喷施有效剂量为281.25g/hm2时防治效果为72.90%,撒施与传统叶面喷施的防治效果相当。【结论】三环唑可湿性粉剂具有施用安全,简单省工,节省劳力成本,可以推广应用。三环唑可湿性粉剂进行撒施时使用有效剂量为843.75g/hm2,进行叶面喷施时使用有效剂量为281.25g/hm2。

【Objective】To compare the effect of different application methods of tricylazole dissolvable dust on rice blast,and to provide basis for technical popularization.【Method】A total of two major treat⁃ments were set up.Test treatment 1 set up three different doses of tricylazole dissolvable dust to broadcast before seedlings transplant;Test treatment 2 applied active components 281.25g/hm2 of tricylazole dissolv⁃able dust for traditional leaf spray in tillering stage and booting stage;while spray water as blank control.【Result】When the effective dose of tricylazole dissolvable dust was 843.75g/hm2,control effect was 71.02%,while the effective dose of tricylazole dissolvable dust was 281.25g/hm2 for traditional leaf spray⁃ing,control effect was 72.90%.The effect of broadcast application is equivalent to that of traditional foliar spraying.【Conclusion】The application of tricylazole dissolvable dust is safe,simple and labor saving,and can be popularized and applied.The effective dose of tricylazole dissolvable dust was 843.75g/hm2 for broadcast application,and the effective dose was 281.25g/hm2 for foliar spraying.