1.4%甲磺·五氟·异噁颗粒剂防除直播稻田杂草应用技术研究  

Application technique of 1.4% sulfentrazone·penoxsulam·clomazone granules to control weeds in direct seeding rice field

作　　者：田志慧[1] 沈国辉[1] 袁国徽 夏振洲 

机构地区：[1]上海市农业科学院生态环境保护研究所,上海201403 [2]长江大学农学院,荆州434025

出　　处：《上海农业学报》2018年第1期52-57,共6页Acta Agriculturae Shanghai

基　　金：上海市科技兴农重点攻关项目[沪农科攻字(2015)第1-1号]

摘　　要：2015—2016年开展了1.4%甲磺·五氟·异噁颗粒剂对水直播稻田杂草防除效果、水稻生长安全性和后茬作物影响的田间试验。结果表明:施药后56 d,1.4%甲磺·五氟·异噁颗粒剂231.0-588.0 g/hm^2对水直播稻田稗[Echinochloa crusgali(Linn.)Beauv.]、千金子[Leptochloa chinensis(L.)Nees]、异型莎草(Cyperus difformis L.)、水苋菜属和鳢肠[Eclipta prostrata(L.)L.]等杂草的株数防除效果分别为99.5%-100.0%、95.4%-100.0%、100%、88.0%—99.0%和100.0%,总草株数防除效果均显著优于其单剂对照和常规除草剂20%苄嘧·丙草胺可湿性粉剂450.0 g/hm^2;与人工除草1次相比,该药在231.0-378.0 g/hm^2剂量下对水稻茎蘖数、株高、地上部鲜重、根长和地下部鲜重等生长指标均无不良影响,增产幅度为2.3%—8.8%;对翻耕和免耕条件下分别种植移栽油菜、大麦、小麦、蚕豆和豌豆等5种后茬作物生长无不良影响。1.4%甲磺·五氟·异噁颗粒剂具有环境友好、使用方便、持效期长、杀草谱广等特点,231.0—294.0 g/hm^2—次撒施即可解决水直播稻田整个生长季杂草危害,具有较好的应用推广前景。field experiments of direct seeding rice field were carried out in 2015 and 2016 to determine the weed control efficacy,the effects on rice growth safety and succeeding crops of 1.4% sulfentrazone· penoxsulam·clomazone granules. The results showed that the number control effect of 1.4% sulfentrazone ·penoxsulam ·clomazone granules 231. 0—588. 0 g/hm^2 on Echinochloa crusgalli, Leptochloa chinensis, Cyperus difformis,Ammannia spp. and Eclipta prostrate were 99. 5% —100. 0%,95. 4% —100. 0%,100. 0%,88. 0% —99. 0%,100.0%,respectively after the application of 56 days. Total control effect was significantly better than the single dose and conventional herbicide 20% bensulfuron-methyl ＋ pretilachlor WP 450. 0 g/hm^2. Compared with 1 times of artificial weeding, the 1. 4% sulfentrazone · penoxsulam · clomazone granules 231. 0—378. 0 g/hm^2 had no harmful effects on the number of rice tiller, plant height, fresh weight of shoot, root length and fresh weight of the ground under,the yield increase was 2.3%—8. 8%. The 1.4% sulfentrazone · penoxsulam · clomazone granules231.0—378.0 g/hm^2 had no harmful effects on the growth of 5 succeeding crops, such as rape, barley, wheat,broad beans and peas under the condition of tillage and no tillage. The 1. 4% sulfentrazone · penoxsulam ·clomazone granules had the characteristics of friendly-environment, convenient use, wide long duration,insecticidal spectrum. One times application of 231.0—294.0 g/hm^2 could solve the weed encroachment of rice fields in entire growing season,and had better applicable value and application prospect.

关 键 词：1.4%甲磺·五氟·异噁颗粒剂 水直播稻田 杂草防除效果 水稻安全性 后茬安全性 

分 类 号：S451.2[农业科学—植物保护]