摘要
为明确丙炔氟草胺在土壤中的残留,通过气相色谱-三重四级杆质谱法测定了其在新疆棉田土壤中的残留及消解动态。利用45 g/hm^(2)、60 g/hm^(2)、75 g/hm^(2)和120 g/hm^(2)的丙炔氟草胺进行棉田土壤封闭处理后,分别于药后2 h及1、5、10、15、30、45和60 d,在0~10 cm和10~20 cm棉田土壤层进行取样测定。结果表明,在0~10 cm和10~20 cm土壤层的丙炔氟草胺消解残留动态表现一致,随着时间的推进,丙炔氟草胺在棉田土壤中的残留呈下降趋势;同一时期不同土壤层的丙炔氟草胺残留量,均表现为随着施药浓度的增加而增大。丙炔氟草胺在0~10 cm棉田土壤层中的半衰期为13.6~17.3 d,10~20 cm棉田土壤层中的半衰期为11.6~16.5 d,属于易降解农药。
This study investigates the flumioxazin residue in soil,as well as the residue and dissipation dynamics of flumioxazin in cotton field soils in Xinjiang by using gas chromatography-triple quadrupole mass spectrometry(GC-MS/MS).Flumioxazin at concentrations of 45 g/hm^(2),60 g/hm^(2),75 g/hm^(2) and 120 g/hm^(2) was applied to soil of cotton fields.Soil samples from the 0-10 cm and 10-20 cm layers of each treatment were collected at 2 hours,1 day,5 days,10 days,15 days,30 days,45 days,and 60 days,respectively.Flumioxazin residues in each sample were determined indoors.The results showed that the flumioxazin dissipation dynamics in the 0-10 cm and 10-20 cm soil layers were consistent.Specifically,the flumioxazin residues in cotton soils exhibited a decreasing trend with time,while residues in various soil layers increased with increasing application concentration.The half-lives of flumioxazin ranged from 13.6 to 17.3 d in 0-10 cm of cotton soil layer,and from 11.6-16.5 days in 10-20 cm of cotton soil layer.These findings indicate that flumioxazin is a readily degradable pesticide.
作者
曹双瑜
安静
吴湘琳
钱涛
吴莉莉
李广阔
丁瑞丰
CAO Shuangyu;AN Jing;WU Xianglin;QIAN Tao;WU Lili;LI Guangkuo;DING Ruifeng(Institute of Plant Protection,Xinjiang Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crops on Northwestern Oasis,Ministry of Agriculture and Rural Affairs,Urumqi 830091 China;Institute of Agricultural Quality Standards and Testing Technology,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China;Institute of Soil,Fertilizer and Agricultural Water-Saving,Xinjiang Academy of Agricultural Sciences/Key Laboratory of Northwest Oasis Agricultural Environment of Ministry of Agriculture and Rural Affairs,Urumqi 830091,China;College of Agronomy,Xinjiang Agricultural University,Urumqi 830052,China;Bazhou Agricultural Technology Extension Center,Korla Xinjiang 841000,China)
出处
《西北农业学报》
北大核心
2025年第7期1365-1371,共7页
Acta Agriculturae Boreali-occidentalis Sinica
基金
青年科技拔尖人才项目(2022TSYCJC0054)
农业农村部西北荒漠绿洲作物有害生物综合治理重点实验室开放基金(KFJJ202103,KFJJ202203)
农业科技创新稳定支持项目(Xjnkywdzc-2022004)。
关键词
丙炔氟草胺
棉花
土壤
残留
半衰期
Flumioxazin
Cotton
Soil
Residue
Half-life period
作者简介
第一作者:曹双瑜,女,高级实验师,研究方向为农产品质量与安全。E-mail:shuangyucao@126.com;通信作者:李广阔,男,研究员,研究方向为农田杂草综合防控。E-mail:1448832764@qq.com;通信作者:丁瑞丰,男,研究员,研究方向为农田杂草综合防控。E-mail:drf022@163.com。
