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中国生物防治学报 ›› 2024, Vol. 40 ›› Issue (5): 1149-1159.DOI: 10.16409/j.cnki.2095-039x.2024.02.050

• 研究论文 • 上一篇    

86.2%氧化亚铜可湿性粉剂与化学农药混配对百合叶斑病的防治效果评价

李梦, 梁巧兰, 魏列新, 蔺珂, 陈应娥, 芮静, 耿洪旗   

  1. 甘肃农业大学植物保护学院/甘肃省农作物病虫害生物防治工程实验室, 兰州 730070
  • 收稿日期:2024-07-03 发布日期:2024-10-11
  • 作者简介:李梦,硕士研究生,E-mail:1060931985@qq.com;通信作者,梁巧兰,教授,博士生导师,E-mail:liangql@gsau.edu.cn。
  • 基金资助:
    甘肃省高校产业支撑计划项目(2023CYZC-49);兰州市科技局项目(2018-4-78)

Control Effect of 86.2% Cuprous Oxide WP Combined with Chemical Fungicides on Lily Leaf Spot Disease

LI Meng, LIANG Qiaolan, WEI Liexin, LIN Ke, CHEN Ying'e, RUI Jing, GENG Hongqi   

  1. Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province/College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2024-07-03 Published:2024-10-11

摘要: 为探究矿物源农药氧化亚铜WP与化学农药混配对百合叶斑病Alternaria alternata的防治效果。采用喷雾法、离体叶片法分别测定了矿物源农药86.2%氧化亚铜WP与3种化学农药混配后混配剂的增效效果及持效期。结果表明,86.2%氧化亚铜WP:70%霉灵SP(7:3)、86.2%氧化亚铜WP:80%代森锰锌WP(2:8、7:3、9:1)对链格孢菌的抑制效果表现为增效作用,EC50分别为22.29、21.48、37.58、95.68 μg/mL,CTC分别为237.03、134.25、169.05、127.89。86.2%氧化亚铜WP:70%霉灵SP(7:3)的防病效果最好,离体防效中保护作用、治疗作用防效分别为86.13%、78.21%,田间防效为75.21%,持效期为7 d,且对兰州百合安全。本试验发现,86.2%氧化亚铜WP与70%霉灵SP以7:3混配后,对百合叶斑病防治效果最高,持效期最长,可用于田间防治。

关键词: 矿物源农药, 化学农药, 混配, 百合叶斑病, 防治效果, 持效期

Abstract: This study aimed to determine the control effect of mineral source fungicide cuprous oxide WP mixed with chemical fungicide on lily leaf spot. In vitro leaf method and spray method were used to determine the synergistic effect and pesticide duration of 86.2% cuprous oxide WP mixed with three chemical fungicides. The results showed that these mixture agents of 86.2% cuprous oxide WP:70% oxazine SP (7:3), 86.2% cuprous oxide WP:80% mancozeb WP (2:8, 7:3, 9:1) showed synergic effects of the inhibition on Alternaria alternata. Their EC50 values were 22.29, 21.48, 37.58, 95.68 μg/mL and CTC were 237.03, 134.25, 169.05, and 127.89, respectively. The mixture agent of 86.2% cuprous oxide WP and 70% hymexazol SP (7:3) had the best disease control effect, with the protective efficacy and the therapeutic efficacy in vitro of 86.13% and 78.21%, respectively. The field control efficacy was 75.21%, the duration was seven days, and it was safe to Lanzhou lily. It was found that the mixture of 86.2% cuprous oxide WP and 70% hymexazol SP at 7:3 had the highest effect on the leaf spot of lily and the longest duration, which could be used for field control.

Key words: mineral source fungicide, chemical fungicide, mixture, leaf spot of lily, control effect, pesticide duration

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