稻粒黑粉病药剂防治技术初探

用三唑酮防治稻粒黑粉病,通过不同的防治适期、不同的浓度及打药次数的防效比较,确定了最佳的防治方法.研究结果表明:在制种田母本始穗期和抽穗期,用20%三唑酮EC1200ml/hm2或15%三唑酮WPl200 g/hm2防治稻粒黑粉病的效果在90%以上,重发年份,齐穗期扬花期还需再防治一次.

Preliminary Discussion on the Chemical Control Technique of Rice Kernel Smut

Triadimefon was used to control rice kernel smut.The best prevention method was identified by the effects controlling through different period,different concentration and application number.The study results showed that the effects of 20% triadimefon EC1200ml/hm2 or 15% triadimefon WP1200 g /hm2 on controlling rice kernel smut was over 90%,in rice initial heading stage and heading stage of the paddy rice female parent in hybrid rice seed production.The rice diseases in serious occurrance year,it needs a control during rice full heading stage to the flowering stage.