施用双唑草腈封闭防除机插水稻田李氏禾及其他杂草  

Control Leersia hexandra and Other Weeds Applicating Pyraclonil in Mechine Transplanting Rice Fields

作　　者：孙亦诚 段云辉 洪爱梅 张海艳 韩敏 孙国俊 SUN Yicheng;DUAN Yunhui;HONG Aimei;ZHANG Haiyan;HAN Min;SUN Guojun(Changzhou Jintan District Planting Industry Technology Promotion Centre,Changzhou 213200,China)

机构地区：[1]常州市金坛区种植业技术推广中心,江苏常州213200

出　　处：《杂草学报》2024年第1期71-76,共6页Journal of Weed Science

基　　金：江苏省稻麦田草害综合治理三年(2023—2025年)行动计划[编号:苏农办农(2022)24号];常州市农业科技创新和示范推广项目[编号:KCSF(2023)07]。

摘　　要：为探讨水稻田李氏禾(Leersia hexandra Swartz)及其他杂草的化学防除技术,2022年在江苏省常州市金坛区开展双唑草腈、丙草胺+苄嘧·苯噻酰药剂组合封闭防除机插水稻田杂草试验。结果表明,施用2%双唑草腈颗粒剂650 g/667 m 2防控机插水稻田禾本科和阔叶杂草的灌浆期株防效、鲜重防效分别达96%、98%以上,对其中的多年生根茎繁殖生长杂草李氏禾的株防效和鲜重防效也达96%以上;施用500 g/L丙草胺乳油80 mL/667 m 2+53%苄嘧·苯噻酰可湿性粉剂60 g/667 m 2组合封闭防控机插水稻田禾本科、阔叶杂草的灌浆期株防效虽仅分别为65.05%、55.79%,但鲜重防效分别达到88.17%、95.86%,其对禾本科杂草的株防效和鲜重防效较低,主要表现为对李氏禾无防效。双唑草腈封闭能高效防除机插水稻田李氏禾及其他主要杂草。To explore chemical control techniques for Leersia hexandra and other weeds,we selected pre-emergent herbicides including pyraclonil and pretilachlor+bensulfuron-methyl·mefenacet to control weeds in machine transplanting rice fields of Jintan District,Changzhou City in 2022.The results showed that plant and fresh weight control effects at filling stage of pyraclonil 2%GR with 650 g/667 m 2 on Gramineae weeds and broad-leaved weeds were over 96%and 98%,respectively,and those of on perennial weeds reproduced by rhizomes L.hexandra were all over 96%in machine transplanting rice fields.At filling stage,plant control effects of pretilachlor 500 g/L EC with 80 mL/667 m 2+bensulfuron-methyl·mefenacet 53%WP with 60 g/667 m 2 on Gramineae weeds and broad-leaved weeds were only 65.05%and 55.79%,respectively.However,fresh weight control effects of the mixtural herbicide on Gramineae weeds and broad-leaved weeds reached to 88.17%and 95.86%,respectively.Plant and fresh weight control effects of the mixtural herbicide on Gramineae weeds were low mainly due to its lack of control effect on L.hexandra.Control effect of pyraclonil as pre-emergent herbicide on L.hexandra and other main weeds was efficient in machine transplanting rice fields.

关 键 词：除草剂 双唑草腈 封闭除草剂 李氏禾 杂草 水稻 

分 类 号：S482.40[农业科学—农药学] S451.2[农业科学—植物保护]