33%嗪吡嘧磺隆水分散粒剂在机直播稻“播喷同步”机械除草新技术中的应用  

Application of 33% Metazosulfuron WG with a New Weed Mechanical Control Measure of Synchronous Seeding and Spraying Herbicides by Rice Direct Seeding Machine

作　　者：张建萍 朱晓群 唐伟 于晓玥 陆永良 ZHANG Jian-ping;ZHU Xiao-qun;TANG Wei;YU Xiao-yue;LU Yong-liang(State Key Laboratory of Rice Biology,China National Rice Research Institute,Hangzhou,310006,China;Agricultural Technology Extension Center of Haiyan County,Jiaxing 314300,China)

机构地区：[1]中国水稻研究所水稻生物学国家重点实验室,浙江杭州310006 [2]海盐县农业技术推广中心,浙江嘉兴314300

出　　处：《黑龙江农业科学》2018年第7期54-57,共4页Heilongjiang Agricultural Sciences

基　　金：国家重点研发计划资助项目(2017YFD0201305-4);科技部重点研发专项资助项目(2016YFD0200801);国家水稻产业技术体系资助项目(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资助项目

摘　　要：为解决机直播水稻田草害重、防治难的问题,研究了33%嗪吡嘧磺隆水分散粒剂在机直播田"播喷同步"机械除草新技术中的应用效果。结果表明:机械施药20d后,33%嗪吡嘧磺隆水分散粒剂有效成分84.2或99.0g·hm^(-2)处理对水稻出苗没有影响,与未施药对照比出苗率为96.2%。施药48d后,99.0g·hm^(-2)处理,对稗草、阔叶草和莎草植株的密度和鲜重防效达98%以上,降低除草剂剂量15%后,对杂草防效没有显著降低,仍为优良水平。表明33%嗪吡嘧磺隆水分散粒剂采用机直播稻"播喷同步"机械除草技术在水稻生产中应用前景良好。In order to solve the problem of weed damage and difficult control in direct seeding rice fields,33%metazosulfuron WG was applied with a new weed control measure of synchronous seeding and spraying herbicides.The results showed that there was no negative influence on the rice seedling emergence rate after 20 din mechanical herbicide application.The rice seedling emergence rate was respectively 96.2% at 20 days after treatment of 84.2 or 99.0 g·hm^-2 metazosulfuron WG,when it was compared with untreated control.The weed control efficiency of Echinochloa crus-galli,Cyperus difformis and broad-leaf weed were up to 98% at 48 dby99.0 g·hm^-2 metazosulfuron WG.There was no significant decrease of weed plant density and fresh weight control efficiency after 15% herbicide dosage was dropped.It suggested that there was a better control for weed when 33% metazosulfuron WG was applied with the weed mechanical control measure of synchronous seeding and spraying herbicides by rice direct seeding machine.

关 键 词：水稻机械化生产 除草剂 出苗率 杂草防效 安达星 

分 类 号：S451.21[农业科学—植物保护]