中国稻米2024，Vol.30Issue(2)：91-94,4.DOI:10.3969/j.issn.1006-8082.2024.02.018
除草剂不同时期应用对机直播稻田杂草的防除作用
Effect of Application of Herbicides at Different Dates in Controling Weeds in Mechanized Direct-seeded Rice
摘要
Abstract
To develop the efficient and safe soil-applied herbicides in direct-seeded rice fields,a field test was conducted to evaluate the control efficiency of ethoxysulfuron on broadleaf weeds and sedge family weeds at different dates after sowing.The results showed that the germination and growth of broadleaf grass and sedge family weeds were effectively inhibited with weed control measure of synchronous seeding and spraying herbicides of ethoxysulfuron.And there was no negative influence on the rice seedling emergence rate after ethoxysulfuron treatment.However,the control effect on broadleaf grass decreased variedly when herbicides treatments containing of ethoxysulfuron were applied at 10 days or 15 days after sowing.All of poaceae weeds,sedge family weeds and broadleaf weed could be effectively controlled after treatment of 97.5 g a.i./hm2 0.65%penoxsulam·ethoxysulfuron controlled-release granules at 15 days after rice sowing,and the control efficiency of plant number reached over 90%.All these results suggested that ethoxysulfuron,as a soil-applied herbicide,should be applied earlier after rice sowing.But if the recommended application window was missed due to bad weather or other uncontrollable factors,the application of 97.5 g a.i./hm 2 0.65%penoxsulam·ethoxysulfuron controlled-release granules or 112.5 g a.i./hm2 30%cyhalofop-butyl combined with 90 g a.i./hm2 30%penoxsulam·ethoxysulfuron treatment could also be a better choice to control most weeds in mechanized direct-seeded rice fields.关键词
机直播稻/乙氧磺隆/杂草/阔叶草/防效/水稻安全性Key words
mechnized direct-seeded rice/ethoxysulfuron/weed/broadleaf grass/control efficiency/rice safety分类
农业科技引用本文复制引用
张建萍,杨永杰,于晓玥,陆永良,唐伟..除草剂不同时期应用对机直播稻田杂草的防除作用[J].中国稻米,2024,30(2):91-94,4.基金项目
国家水稻产业技术体系项目(CARS-01) （CARS-01）
中国农业科学院科技创新工程病虫草害防控技术创新团队项目 （）
