5%三氟嘧磺草胺SC对柑橘园杂草的防效  

Efficacy and Safety of Tiafenacil 5% SC on Weeds in Citrus Orchards

作　　者：高美珠 李卫 邹子玉 刘浪 李保同[1] GAO Mei-zhu;LI Wei;ZOU Zi-yu;LIU Lang;LI Bao-tong(College of Land Resources and Environment,Jiangxi Agricultural University,Nanchang 330045,China)

机构地区：[1]江西农业大学国土资源与环境学院,南昌330045

出　　处：《农药》2021年第10期778-780,共3页Agrochemicals

基　　金：“十三五”国家重点研发计划(2017YFD0301604)。

摘　　要：[目的]5%三氟嘧磺草胺SC作为一种新型低毒低抗性除草剂,为探究其防除柑橘园杂草的可能性。[方法]采用茎叶定向喷雾法试验了5%三氟嘧磺草胺SC在40.13~160.50 g a.i./hm^(2)处理下对柑橘园杂草的防除效果。[结果]5%三氟嘧磺草胺SC可有效控制柑橘园禾本科杂草,速效性强,持效期达30 d,对柑橘树生长无不良影响。100.31~160.50 g a.i./hm^(2)处理在药后15、30 d对禾本科杂草株防效分别为88.71%~96.15%和82.33%~91.29%,药后30 d对禾本科杂草鲜质量防效为89.27%~95.81%。而对阔叶类杂草防效相对较低,所有处理在药后15、30 d防效均低于对照药剂70%苯嘧磺草胺WG 65.63 g a.i./hm^(2)处理。[结论]5%三氟嘧磺草胺SC防除柑橘园禾本科杂草的推荐使用剂量为100.31~160.50 g a.i./hm^(2)。[Aims] This study aims to investigate the possibility of tiafenacil 5% SC, a new herbicide with low toxicity and low resistance, used for weed control in citrus orchard, was to. [Methods] The control effect of tiafenacil 5% SC on weeds in citrus orchards at 40.13-160.50 g a.i./ha treatment was tested by stem and leaf directional spraying.[Results] The tiafenacil 5% SC could effectively control the grass weeds in citrus orchards with the effective period of 30 days, which had no adverse effect on citrus tree growth. The plant efficacies of tiafenacil 5% SC at 100.31-160.50 g a.i./ha on the grass weeds were 88.71-96.15 and 82.33-91.29% at 15 and 30 days after spray,respectively, and its fresh weight efficacies were 89.27-95.81% at 30 days after spray. The efficacy of tiafenacil 5% SC on the broad-leaf weeds was lower, and the control effect of all treatments at 15 and 30 days after spray were lower than that of saflufenacil 70% WG at 65.63 g a.i./ha. [Conclusions] The recommended dose of tiafenacil 5% SC on the grass weeds in citrus orchards is 100.31-160.50 g a.i./ha.

关 键 词：三氟嘧磺草胺 杂草 柑橘园 防除效果 

分 类 号：S482.4[农业科学—农药学]