烟草科技2024，Vol.57Issue(4)：53-60,8.DOI:10.16135/j.issn1002-0861.2023.0714
烟田前茬残留二氯喹啉酸的解毒剂筛选
Antidote screening for phytotoxicity of residual quinclorac in tobacco fields
摘要
Abstract
In order to effectively mitigate the phytotoxicity to tobacco caused by residues of herbicide quinclorac,detoxifying agents and formulations with better mitigating effect on the quinclorac phytotoxicity were screened through pot and field experiments.The results of the pot experiments showed that gibberellin(GA)+ indoleacetic acid +urea + potassium dihydrogen phosphate(mass ratio 1∶1∶64∶32),Tianda 2116,Gefu microbial agent,GA,indoleacetic acid and urea + potassium dihydrogen phosphate(mass ratio 2∶1)all had certain restorative effects on leaf width,plant height and number of leaves of herbicide-damaged tobacco plants.Among them,the GA + indoleacetic acid + urea + potassium dihydrogen phosphate treatment(mass ratio 1∶1∶64∶32)had the best recovery effect on the herbicide-damaged tobacco plants,and there was no significant difference between the agronomic traits of the herbicide-damaged tobacco plants and the normal tobacco plants after 30 d treatment.In the field experiments,the antidote formula of 30 000 g/ha Gefu microbial agent for root irrigation combined with 1 470 g/ha GA + indoleacetic acid + urea + potassium dihydrogen phosphate(mass ratio of 1∶1∶64∶32)for foliar spraying was the best treatment for plant growth,and the plants did not show any deformity symptom.Leaf length,leaf width,plant height,stem circumference,and number of leaves of the restored tobacco plants increased by 46.51%,162.28%,79.70%,79.24%,and 44.72%,respectively,and the differences reached significant levels compared with the herbicide-damaged tobacco plants.Compared to normal tobacco plants,tobacco yield,average price,production value,and proportion of high-grade tobacco leaves of restored tobacco plants increased by 12.25%,4.48%,17.37%,and 14.05%,respectively.In addition,the nicotine content of herbicide-damaged tobacco was significantly reduced,and quinclorac was undetectable in soil and tobacco at harvest.关键词
烟草/药害/二氯喹啉酸/协同修复Key words
Tobacco/Phytotoxicity/Quinclorac/Synergetic remediation分类
农业科技引用本文复制引用
李照怡,杨敬之,尹显慧,张竹竹,龙友华,杨森..烟田前茬残留二氯喹啉酸的解毒剂筛选[J].烟草科技,2024,57(4):53-60,8.基金项目
中国烟草总公司贵州省公司科技项目"前茬除草剂残留对烤烟生长影响及削减技术研究"(201508) （201508）
第十三批贵州省优秀青年科技人才资助项目"喀斯特山地农作物重要有害生物成灾规律及防控关键技术研究"([2021]5614). （[2021]5614）
