草地学报

草地学报 ›› 2019, Vol. 27 ›› Issue (3): 596-602.DOI: 10.11733/j.issn.1007-0435.2019.03.011

• 研究论文 • 上一篇    下一篇

2,4-D丁酯在裸燕麦中的残留消解动态及其对带壳率的影响

琚泽亮, 赵桂琴, 柴继宽   

  1. 甘肃农业大学草业学院, 草业生态系统教育部重点实验室, 甘肃省草业工程实验室, 中-美草地畜牧业可持续发展研究中心, 甘肃 兰州 730070
  • 收稿日期:2018-12-28 修回日期:2019-04-17 出版日期:2019-06-15 发布日期:2019-07-19
  • 通讯作者: 赵桂琴
  • 作者简介:琚泽亮(1991-),男,安徽宣城人,博士研究生,主要从事草地生物多样性保护与利用相关研究,E-mail:juzliang@126.com
  • 基金资助:
    国家燕麦荞麦产业体系（CARS-07-C）资助

Residual Dynamics of 2,4-D Butyl Ester in Naked Oat and Its Effects on Hull Rate under Field Application

JU Ze-liang, ZHAO Gui-qin, CHAI Ji-kuan   

  1. College of Pratacultural Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem, Ministry of Education, Pratacultural Engineering Laboratory of Gansu Province, Sino-U. S. Centers for Grazing Land Ecosystem Sustainability, Lanzhou, Gansu Province 730070, China
  • Received:2018-12-28 Revised:2019-04-17 Online:2019-06-15 Published:2019-07-19

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摘要： 为了探讨2，4-D丁酯对裸燕麦安全性的影响，以白燕2号为材料，研究了低、中和高浓度（450，750和1 050 mL·hm-2）2，4-D丁酯在裸燕麦中的残留差异及其对燕麦带壳率、株高的影响。结果表明：随着施用浓度的升高，2，4-D丁酯的残留量也在增加。施药7 d后，高浓度下2，4-D丁酯在裸燕麦中的残留量为0.802 mg·kg-1，比低浓度显著（P<0.05）高出147.53%，且2，4-D的残留量与2，4-D丁酯的用量呈正相关关系；28 d后高浓度下裸燕麦中2，4-D残留量最高，达0.032 mg·kg-1，中浓度下为0.026 mg·kg-1，比低浓度处理显著（P<0.05）高出3~4倍。2，4-D丁酯喷施后对裸燕麦的安全性影响也非常显著。2，4-D丁酯增加裸燕麦的带壳率，降低了株高，高浓度下带壳率达5.61%，显著（P<0.05）高于对照，株高较对照显著（P<0.05）降低了12.90%。中、高浓度下，白燕2号均表现出药害现象，2，4-D丁酯残留量较高，低浓度处理对裸燕麦安全。

关键词: 裸燕麦, 2, 4-D丁酯, 2, 4-D, 残留, 带壳率

Abstract: In order to investigate the effect of 2,4-D butyl ester on safety in naked oat,‘Baiyan No. 2’ was used as material to study the residuals of low,medium and high concentrations (450,750 and 1 050 mL·hm-2) 2,4-D butyl ester in naked oat and their effects on shell rate and plant height of oat. The results showed that the residue amount of 2,4-D butyl ester in naked oat increased with increasing the concentration of 2,4-D butyl ester. 2,4-d butyl ester sprayed after 7 days,the residue amount of 2,4-D butyl ester in naked oat under high dosage was 0.802 mg·kg-1,147.53% higher (P<0.05) than low dosage. The residue amount of 2,4-D was positively correlated with the dosage of 2,4-D butyl ester. After 28 days,the residue amount of 2,4-D in naked oats was 0.032 mg·kg-1 under high dosage and 0.026 mg·kg-1 under medium,which was 3 to 4 times greater than that under the low dosage (P<0.05). 2,4-D butyl ester had significant effects on the safety of naked oat. 2,4-D butyl ester increased the shell rate of oat,reaching 5.61% under high dosage,and decreased the plant height,12.90% decrease compared to the control. Medium and high dosage caused damage of ‘Baiyan No.2’ and the high residue amount of 2,4-D butyl ester,and low dosage was safe.

Key words: Naked oat, 2,4-D butyl ester, 2,4-D, Residue, Hull rate

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