茎叶处理除草剂对马齿苋的防除效果评价  

Efficacy of Post-Emergence Herbicides on Portulaca oleracea

作　　者：王宇[1] 郭玉莲[1] 罗婵[1] 丛克强[1] WANG Yu;GUO Yulian;LUO Chan;CONG Keqiang(Plant Protection Pesearch Institute,Heilongjiang Academy of Agricultural Sciences/Observation and Experiment Station of Crop Pests of Harbin,Ministry of Agriculture and Rural Affairs,Harbin 150086,China)

机构地区：[1]黑龙江省农业科学院植物保护研究所/农业农村部哈尔滨作物有害生物科学观测实验站,黑龙江哈尔滨150086

出　　处：《黑龙江农业科学》2024年第9期47-51,共5页Heilongjiang Agricultural Sciences

基　　金：黑龙江省农业科学院“农业科技创新跨越工程”专项(HNK2019CX14)。

摘　　要：为了筛选对马齿苋防除效果好的除草剂,采用盆栽试验比较分析10种茎叶处理除草剂对马齿苋的防效。结果表明,在试验所设剂量,20%氯氟吡氧乙酸乳油、25%氟磺胺草醚水剂对2叶期-4叶期和6叶期-8叶期马齿苋防效可达100%。38%莠去津悬浮剂、480 g·L^(-1)麦草畏水剂和480 g·L^(-1)灭草松水剂对2叶期-4叶期马齿苋防效达100%,对6叶期-8叶期马齿苋有很好的抑制作用,鲜重防效好。30%苯唑草酮悬浮剂对2叶期-4叶期马齿苋鲜重防效为90.7%,但不能有效防除6叶期-8叶期马齿苋。40 g·L^(-1)烟嘧磺隆可分散油悬浮剂、10%硝磺草酮可分散油悬浮剂、25%辛酰溴苯腈乳油和84%氯酯磺草胺水分散粒剂不能有效防除马齿苋。In order to screen the suitable herbicides for control Portulaca oleracea,the efficacy of 10 post-emergence herbicides were compared by pot experiment.The results showed that,the control effects of 20%fluroxypyr EC and 25%fomesafen AS on P.oleracea at 2 leaves-4 leaves and 6 leaves-8 leaves were 100%.38%atrazine SC,480 g·L^(-1)dicamba AS and 480 g·L^(-1)bentazone AS had 100%control effects on P.oleracea at 2 leaves-4 leaves and good control effects on fresh weight of P.oleracea at 6 leaves-8 leaves.The control effect of 30%topramezone SC on fresh weight of P.oleracea at 2 leaves-4 leaves was 90.7%,but it could not effectively control weed at 6 leaves-8 leaves.40 g·L^(-1)nicosulfuron OD,10%mesotrione OD,25%bromoxynil octanoate EC and 84%cloransulam-methyl WG could not effectively control P.oleracea.

关 键 词：马齿苋 除草剂 防除效果 

分 类 号：S451.2[农业科学—植物保护]