| 氟噻唑吡乙酮对烟草疫霉的室内毒力及对烟草黑胫病的防效研究 |
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| 引用本文： | 焦 芹,张风文,郭 丛,邓佳辉,姜兴印,王 杰.氟噻唑吡乙酮对烟草疫霉的室内毒力及对烟草黑胫病的防效研究[J].植物保护,2024,50(1):328-333. |
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| 作者姓名： | 焦 芹 张风文 郭 丛 邓佳辉 姜兴印 王 杰 |
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| 作者单位： | 1. 山东农业大学植物保护学院, 泰安 271018; 2. 北京首都机场物业管理有限公司, 北京 100621; 3. 中国农业科学院烟草研究所, 青岛 266101 |
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| 基金项目： | 山东省自然科学基金（ZR2019BC031） |
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| 摘 要： | 烟草黑胫病是由烟草疫霉引起的一种土传性真菌病害, 对烟叶生产造成严重的危害。为了探究氟噻唑吡乙酮对烟草黑胫病的防治效果, 在室内离体条件下测定其对烟草疫霉菌丝生长、孢子囊形成的抑制作用;并通过室内盆栽和大田试验评价氟噻唑吡乙酮对烟草黑胫病的防治效果及对烟草的安全性。结果表明, 氟噻唑吡乙酮对各个地区烟草疫霉菌丝生长和孢子囊形成的抑制效果均很好, 与其他对照药剂相比, 毒力较高, EC 50分别为0.000 5 mg/L和0.000 4 mg/L。室内盆栽试验结果表明, 10%氟噻唑吡乙酮可分散油悬浮剂4 000倍液对烟草黑胫病的防效为84.33%, 2 000倍液防效则达到了96.00%, 与对照药剂相比有显著差异。田间药效试验结果表明, 10%氟噻唑吡乙酮可分散油悬浮剂2 000、3 000、4 000倍液的防效分别达到了93.82%、90.18%和83.27%, 对照药剂80%烯酰吗啉水分散粒剂2 500倍液和80%代森锰锌可湿性粉剂600倍液防效分别为77.82%和75.27%。此外, 相比于对照药剂, 氟噻唑吡乙酮在株高、有效叶片数、叶长、叶宽和光合速率方面有更好的促进作用。本研究结果表明, 氟噻唑吡乙酮能够有效防治烟草黑胫病, 并在一定程度上可以提高烟草产量和品质。
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| 关 键 词： | 烟草黑胫病 氟噻唑吡乙酮 室内毒力 防治效果 |
| 收稿时间： | 2022/11/16 0:00:00 |
| 修稿时间： | 2022/12/14 0:00:00 |
Indoor toxicity of oxathiapiprolin against Phytophthora nicotiana and its control effect against tobacco black shank |
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| JIAO Qin,ZHANG Fengwen,GUO Cong,DENG Jiahui,JIANG Xingyin,WANG Jie.Indoor toxicity of oxathiapiprolin against Phytophthora nicotiana and its control effect against tobacco black shank[J].Plant Protection,2024,50(1):328-333. |
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| Authors: | JIAO Qin ZHANG Fengwen GUO Cong DENG Jiahui JIANG Xingyin WANG Jie |
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| Abstract: | Tobacco black shank is a soil-borne fungal disease caused by tobacco blight, which poses a serious hazard to tobacco production. To investigate effect of oxathiapiprolin on control of tobacco black shank, the inhibition of mycelial growth and sporulation of Phytophthora nicotiana was measured under in vitro conditions, and control effect of oxathiapiprolin on tobacco black shank and its impact on the safety of tobacco was evaluated in indoor pot and field trials. The results showed that oxathiapiprolin was effective in inhibiting mycelial growth and sporocyst formation of tobacco pathogens in all regions, with EC 50 value of 0.000 5 mg/L and 0.000 4 mg/L, respectively, compared to other control agents. Indoor pot test showed that the efficacy of oxathiapiprolin 10% oil dispersion 4 000 times against tobacco black shank was 84.33%, while the efficacy of 2 000 times reached 96.00%, which was significantly different from the control agenT. Field trials showed that the efficacy of oxathiapiprolin 10% oil dispersion at 2 000, 3 000 and 4 000 times of solution reached 93.82%, 90.18% and 83.27%, respectively, while that of dimethomorph 80% water dispersible granule 2 500 times and mancozeb 80% wettable powder 600 times were 77.82% and 75.27%, respectively. In addition, compared to the control agent, oxathiapiprolin showed better promotion in plant height, effective leaf number, leaf length, leaf width and photosynthetic rate. The above results showed that oxathiapiprolin was effective in controlling tobacco black shank and could improve tobacco yield and quality to a certain extenT. |
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| Keywords: | tobacco black shank oxathiapiprolin indoor toxicity control efficacy |
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