不同除草剂对寒地湿润直播稻田杂草的防除效果及安全性评价  

Weed Control Effects and Corp Safety of Different Herbicides in Wed Direct Seeding Rice Fields in Cold Region

作　　者：张喜娟[1] 来永才[1] 孟英[1] 张凤鸣[1] 唐傲[1] 董文军[1] 冷春旭[1] 刘猷红 王立志[1] 姜树坤[1] 

机构地区：[1]黑龙江省农业科学院耕作栽培研究所,黑龙江哈尔滨150086

出　　处：《黑龙江农业科学》2017年第2期58-62,共5页Heilongjiang Agricultural Sciences

基　　金：黑龙江省应用技术研究与开发计划重大资助项目(GA 15B101);国家科技支撑计划资助项目(2015BAC02B02);国家重点研发资助项目(2016YFD030010404);公益性行业(农业)科研专项资助项目(201303102);黑龙江省引进博士人员科研启动金资助项目(201507-13);黑龙江省水稻科技协同创新体系资助项目

摘　　要：杂草是影响水稻直播田高产、稳产的重要因素之一,为了筛选适合寒地水稻湿润直播田的除草剂,研究了不同时期施用不同除草剂对湿润直播田杂草的防除效果及对水稻产量和安全性的影响。结果表明:播前封闭施用40%苄嘧·丙草胺或40%苄嘧·丙草胺+38%苄·噁·丙草胺,2叶1心期施用55%吡嘧·丙草胺或55%吡嘧·丙草胺+38%苄·噁·丙草胺,5叶1心期施用480g·L^(-1)灭草松+36%二甲四氯钠·氯氟吡可高效防除直播田禾本科杂草、莎禾科杂草和阔叶杂草。直播稻的出苗情况、生长发育动态和产量性状分析结果表明,这些药剂在生长期施用没有产生明显的药害。Weedsare is an important factor which influence the high and stable yields of direct seeding rice.In order to select the herbicides suitable for the wed direct seeding rice in cold region,different herbicides were chosen to investigate their control effects on weeds and safety on crop during rice growing season.The results showed that application of 40% bensulfuronmethyl·pretilachlor or 40% bensulfuronmethyl·pretilachlor add38% bensulfuronmethyl·clomazone·pretilachlorbefore sowing,55% pyrazosulfuron-ethyl·pretilachlor or 55%pyrazosulfuron-ethyl·pretilachlor add 38% bensulfuronmethyl·clomazone·pretilachlor at 2-leaf stage of rice,480g·L-1 bentazone add 36% mpca sodium monosultap·fluroxypyr at 5-leaf stage of rice,respectively,controlled weeds effectively.The results of seedling emergence,growth and development and yield of direct seeding rice showed that the application of those pesticides in wed direct seeding rice paddy fields had no damage to rice.

关 键 词：水稻 湿润直播田 除草剂 杂草 防除效果 

分 类 号：S451.21[农业科学—植物保护]