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中国农学通报 ›› 2021, Vol. 37 ›› Issue (28): 88-95.doi: 10.11924/j.issn.1000-6850.casb2020-0818

所属专题: 烟草种植与生产

• 植物保护·农药 • 上一篇    下一篇

砜嘧磺隆在烤烟生产中的应用及安全性评价

周伟1(), 向德明2(), 田明慧2, 杨红武3, 向青松1, 滕凯2, 饶巍4   

  1. 1湖南湘西州烟草公司凤凰县分公司,湖南凤凰 416200
    2湖南湘西州烟草公司,湖南吉首 416000
    3湖南省烟草公司,长沙 410005
    4湖南常德市烟草公司桃源县分公司,湖南桃源 415700
  • 收稿日期:2020-12-22 修回日期:2020-08-13 出版日期:2021-10-05 发布日期:2021-10-28
  • 通讯作者: 向德明
  • 作者简介:周伟,男,1983年出生,湖北襄阳人,农艺师,硕士研究生,研究方向为烟草栽培技术研究。通信地址:416200 湖南省湘西自治州凤凰县烟草专卖局,E-mail: zwxxyc@163.com
  • 基金资助:
    湖南省烟草公司项目“湖南高端卷烟原料定制化开发”(18-20Aa01)

Application and Safety Evaluation of Rimsulfuron in Flue-cured Tobacco Production

Zhou Wei1(), Xiang Deming2(), Tian Minghui2, Yang Hongwu3, Xiang Qingsong1, Teng Kai2, Rao Wei4   

  1. 1Fenghuang Branch of Xiangxi Autonomous Prefecture Tobacco Company, Fenghuang Hunan 416200
    2Xiangxi Autonomous Prefecture of Hunan Tobacco Company, Jishou Hunan 416000
    3Hunan Tobacco Company, Changsha 410005
    4Taoyuan Branch of Changde Tobacco Company, Taoyuan Hunan 415700
  • Received:2020-12-22 Revised:2020-08-13 Online:2021-10-05 Published:2021-10-28
  • Contact: Xiang Deming

摘要:

为指导化学除草剂砜嘧磺隆在烤烟生产上的应用,在旺长初期,采取烟株茎叶定向喷雾的方法,研究砜嘧磺隆施用后烤烟的药害,评价其安全性,筛选奈安、芸苔素内脂2种保护剂与砜嘧磺隆混施,开展保护性试验。试验结果表明,25%碸嘧磺隆会对烤烟快速产生最高7级程度的药害,但药害症状表现期较短,施药10天后基本消失,15天后全部消失,烟株恢复正常生长,成熟期的烟叶无药剂残留。2种保护剂可对砜嘧磺隆产生的药害起到一定缓解修复作用;奈安保护剂使用效果优于芸苔素内酯,但两者对直接接触到药液的叶片影响效果修复不显著;2种保护剂降低了砜嘧磺隆对杂草的防效和持效期。在烟叶生产活动中砜嘧磺隆施用的有效浓度以50~58.3 mg/kg为宜,一旦发现烟株有明显的药害症状表现,即可喷施奈安或芸苔素内酯进行保护性修复。

关键词: 碸嘧磺隆, 烤烟, 药害, 奈安, 芸苔素内脂

Abstract:

The paper aims to further guide the application of the chemical herbicide rimsulfuron in flue-cured tobacco production. In this experiment, the directional spray method on tobacco stems and leaves was used to study the phytotoxicity to flue-cured tobacco caused by rimsulfuron, and evaluate its safety. We screened out two protective agents, Nai’an and Brassinolide, mixed them with rimsulfuron, and carried out protective experiments at the early stage of vigorous growth period. The results showed that 25% rimsulfuron could quickly produce the highest level of phytotoxicity to flue-cured tobacco, but the symptoms of phytotoxicity were short, and basically disappeared after 10 days of application, and disappeared after 15 days. The tobacco plants returned to normal growth, and the tobacco leaves at the mature stage had no drug residue. The two protective agents played a certain role in alleviating the phytotoxicity caused by rimsulfuron. The effect of Nai’an was better than that of brassinolide, however, the effect of both the agents on leaves directly exposed to the liquid medicine was not significant. The two protective agents reduced the control effect and duration of rimsulfuron on weeds. The appropriate concentration of rimsulfuron in tobacco production was 50-58.3 mg/kg. Once the tobacco plants showed obvious symptoms of phytotoxicity, Nai’an or brassinolide should be sprayed for protective restoration.

Key words: rimsulfuron, flue-cured tobacco, phytotoxicity, Nai’an;, brassinolide

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