不同药剂组合对烟草花叶病毒病的防控效果研究

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中图分类号：S433.3 文献标识码：A文章编号：2097-1354（2025）05-0066-09

Abstract： Tobacco mosaic virus disease is a common and harmful disease in Panzhihua，and lack of green and effective control technology for this disease seriously restricted the high-quality development of local tobacco production. This study evaluated the control effect of combined application of resistance inducers，foliar fertilizers and disease control agents on tobacco mosaic virus disease by field experiment. The combined effects of scopoletin and salicylic acid as resistance inducers，Guanding and Xizhimei #2 as foliar fertilizers，and Ningnanmycin as a key disease control agent by leaf spray treatment on the occurrence of tobacco mosaic virus disease and tobacco growth were investigated. The results showed that leaf spray treatment of scopoletin and salicylic acid combined with Xizhimei #2 and Ningnanmycin could significantly improve the resistance of tobacco to mosaic virus. The inducing effect of scopolide on tobacco resistance was beter than that of salicylic acid. 12 days after second application of two agents，disease index of tobacco mosaic virus was significantly reduced by 43.24% and 31.35% compared with CK，and by 58.06% and 46.83% compared before treatment，respectively，which the disease index reduction rate was significantly higher than that of control （26.26%） .12days after the combined application of scopolide，Guanding and Ningnanmycin，the disease index was significantly reduced by 43.24% compared with CK，and 53.97% compared with before treatment. The com bined application of resistance inducers，foliar fertilizers and disease control agent by leaf spray treatment had certain promoting effects on tobacco height，stem circumference and leaf area in the field. In this study，combined control application suitable for green control of tobacco mosaic virus disease in Panzhihua was screened，which provided theoretical reference and material support for green control of tobacco virus disease and healthy cultivation of tobacco in Panzhihua area.

Key words： tobacco mosaic virus disease; resistance inducing; scopoletin； green control

植物病毒病是仅次于植物真菌病害的第二大类植物病害，被称为“植物癌症”1]，具有寄主专化性强、胞内寄生、传播迅速等特点[2]，可对农作物产量和质量造成严重的不利影响。（剩余8191字）