叶田会 闫芳芳 张瑞平 唐李丽 张映杰 张宗锦

摘要  [目的]明确植物源杀虫剂与生防微生物对烟草根结线虫病的联合作用效果。[方法]通过田间试验研究烤烟移栽时联合施用永卫168与淡紫拟青霉对烤烟农艺性状、产质量及对根结线虫防效的影响。[结果] 永卫168与淡紫拟青霉联合施用不仅能明显提升烤烟的农艺性状及产质量，还能显著提高淡紫拟青霉对烟草根结线虫防治效果。单独施用永卫168能显著增加烟株的株高及叶片长度;单独施用淡紫拟青霉能显著增加烤烟的叶片长度和宽度;永卫168与淡紫拟青霉联合施用时的农艺性状、产质量均显著优于单一处理。单独施用淡紫拟青霉的防治效果为47.09%，单独使用永卫168的防治效果为52.08%，永卫168与淡紫拟青霉联合施用的防效为75.83%，较单独处理的防效提高了23.75%～28.89%。[结论] 永卫168与淡紫拟青霉联合施用不仅能有效防治烟草根结线虫病，还能改善烟株的综合农艺性状并提高产质量。

关键词  生物防治;淡紫拟青霉;永卫168;烟草根结线虫

中图分类号  S  435.72文献标识码  A文章编号  0517-6611（2020）04-0132-02

doi：10.3969/j.issn.0517-6611.2020.04.039

开放科学（资源服务）标识码（OSID）：

Integrated Control Root-knot Nematode Disease of Tobacco by Yongwei168 and Paecilomyces lilacinus

YE Tian-hui，YAN  Fang-fang， ZHANG Rui-ping et al

（Panzhihua Branch of Sichuan Tobacco Corporation， Panzhihua，Sichuan  617099）

Abstract  [Objective] To study the integrated effect of botanical insecticide and biocontrol agent on tobacco root-kont nematode. [Method] Field test was carried out to research the effects of combined utilization Yongwei168 and P. lilacinus on tobacco agronomic traits， yield， value of output and average price root-knot and nematode control efficiency. [Result] Combined utilization Yongwei168 and P. lilacinus not only significantly improved the agronomic characters， yield and output of flue-cured tobacco but also promoted the control efficiency of P.lilacinus on tobacco root-knot nematode. Single application of Yongwei168 could significantly promote the plant height and leaf length of tobacco;Single application of P.lilacinus could significantly promote the leaf width of tobacco;Combined utilization of Yongwei168 and P. lilacinus could significantly improve the the agronomic characters， yield and output of flue-cured tobacco. The control efficiency was 47.09% with P.lilacinus， 52.08% with Yongwei168 alone， and 75.83% with combined application， which was 23.75%-28.89% higher than that with alone.[Conclusion]The result demonstrated the integrated use of Yongwei168 and P.lilacinus could enhance control efficacy to root-knot nematode effectively，and promote comprehensive agronomic traits， yield and output of tobacco.

Key words  Biocontrol;Paecilomyces lilacinus;Yongwei168;Tobacco root-knot nematode

全球每年因植物寄生線虫所致的损失近1 570亿美元 [1]，根结线虫（Meloidogyne spp.）作为其中为害最严重的一类[2]，其能寄生的植物多达3 000余种[3-4]。近年来我国各大烟草产区根结线虫病危害面积呈逐年增加的趋势，大多烟草产区，根结线虫病已逐步上升为烟草生产中的第一病害[5]，在山东、河南、湖北、安徽和西南三省都有根结线虫病为害较重的报道[6-9]。……