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Position: Home > Articles > Control effect of two herbicides on water hyacinth and water lettuce Plant Protection 2018 (2) 221-226

两种除草剂对水葫芦和大薸的防除效果

作  者：
陈兆杰;黄璐璐;宋世明;雷雨豪;谭辉华;李雪生
单  位：
广西大学农药与环境毒理研究所广西农业环境与农产品安全重点实验室培育基地
关键词：
大薸;水葫芦;硝磺草酮;灭草松;防除
摘  要：
采用枯叶指数、枯柄指数、新根抑制、鲜重防效等指标,评价480g/L灭草松水剂和10%硝磺草酮可分散油悬浮剂对水葫芦及大薸的防除效果。盆栽毒力测定结果表明,10%硝磺草酮可分散油悬浮剂对水葫芦和大薸新根有很好的抑制作用,药后10d,LC50分别为14.22和7.21mg/L;480g/L灭草松水剂对水葫芦和大薸鲜重的毒力较强,药后10d,LC50分别为548.22和3.49mg/L;药后20d,LC50分别为53.28和3.31mg/L;而2种除草剂对水葫芦叶片、叶柄和大薸的叶片毒力均较低,其中480g/L灭草松水剂对水葫芦叶片和叶柄毒力优于10%硝磺草酮可分散油悬浮剂,药后30dLC50分别为94.40和93.43mg/L;对大薸叶片毒力较强的是10%硝磺草酮可分散油悬浮剂,药后20dLC50为165.07 mg/L,在实际应用中,为提高防治效果,可适当提高剂量或进行混配处理。
译  名：
Control effect of two herbicides on water hyacinth and water lettuce
作  者：
CHEN Zhaojie;HUANG Lulu;SONG Shiming;LEI Yuhao;TAN Huihua;LI Xuesheng;Institute of Pesticide &Environmental Toxicology,Guangxi University,Guangxi Breeding Base of Key Laboratory of Agro-Environment and Agro-Products Safety;
关键词：
water lettuce;;water hyacinth;;mesotrione;;bentazone;;control
摘  要：
The control effect of water hyacinth and water lettuce by 10% mesotrione dispersed oil suspensions and480 g/L bentazone aqueous solution were evaluated by withering leaf index,withering petiole index,and the inhibition to new roots and fresh weight.The result showed that mesotrione 10% OD showed high toxicity to both water hyacinth root and water lettuce root,with the LC_(50) values of 14.22 mg/L and 7.21 mg/L after 10 d treatment,respectively.Bentazone 480 g/L AS has relative high toxicity to fresh weight of water hyacinth and water lettuce,with the LC_(50) values of 548.22 and 3.49 mg/L after 10 d treatment and 53.28 and 3.31 mg/L after 20 d treatment,respectively.However,the toxicity of the two herbicides was relatively low to leaf and petiole.Bentazone480 g/L AS had a higher toxicity to leaf and petiole of water hyacinth than mesotrione 10% OD,with the LC_(50) values of 94.40 and 93.43 mg/L,respectively,while mesotrione 10% OD had a higher toxicity to leaf of water lettuce,with the LC50 value of 165.07 mg/L.In practical application,in order to improve the control effect,the dosage can be appropriately increased or mixed with each other.

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