草坪修剪及模拟降雨对苄·甲磺药效的影响  

Effect of turf-mowing and simulated rainfall on the efficiency of Bensulfuron-methyl·Metsulfuron-methyl

作　　者：王长方[1] 游泳[1] 王俊[1] 武菊英[2] 陈峰[1] 王庆海[2] 

机构地区：[1]福建省农业科学院植物保护研究所,福建福州350013 [2]北京市农林科学院,北京100097

出　　处：《福建农林大学学报（自然科学版）》2009年第4期351-355,共5页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：福建省科技厅资助项目(2005D059)

摘　　要：以反枝苋、藜为测试杂草,研究了草坪修剪和不同时间段模拟降雨对10%苄.甲磺可湿性粉剂防除杂草效果的影响,结果表明,药后2 d修剪显著降低药剂的杂草鲜重防效,药后5 d修剪与不修剪没有显著差异.药后0 h降雨30 mm.h-1,对反枝苋株防效和鲜重防效比无降雨分别低20.0%和3.5%,药后0、1 h降雨对藜株防效比无降雨分别低20.5%和18.0%,鲜重防效约低10.0%,差异达显著水平,药后2 h降雨与无降雨差异不显著,对藜的影响大于反枝苋.草坪施用苄.甲磺后,其修剪或浇水管理应分别于药后5 d和2 h进行.Effects of turf-mowing and simulated rainfall on the efficiency of Bensulfuron-methyl · Metsulfuron-methyl wettable powder against Amaranthus retroflexus and Chenopodium album were tested, Results showed that the control efficiency was significantly affected when turf-mowing was done two days later and no effect was found five days later. When rainfall was conducted as 30 mm · h^-1 immediately after the herbicide was used, the quantity and fresh weight controlling efficieneies to A. retroflexus decreased by 20.0% and 3.5%, respectively. When rainfall was in 0 and 1 hour after the herbicide was used, the quantity controlling effieieneies to C. album were decreased by 20.5% and 18.0% , respectively and fresh weight controlling efficiency decreased by 10.0%. No significant difference in controlling C. album by Bensulfuron-methyl · Metsulfuron-methyl was found between rain-fall two days later and no rain. The rainfall showed more effective on C. album than on A. retroflexus. When Bensulfuron-methyl · Metsulfuron-methyl wettable powder was used to control turf weeds, turf-mowing and water management should be conducted 5 days and 2 hours later, respectively.

关 键 词：草坪 修剪 模拟降雨 防效 

分 类 号：S481.9[农业科学—农药学]