连海　申昌优　钟善良　肖先仪　刘毅　饶文平　郭亮　杨庆根　刘红香　钟秋瓒

摘要 [目的]筛选出适宜赣州烟区推广应用防治烟草赤星病的生物药剂及其最佳施药时间，用以替代或部分替代化学药剂。[方法]通过研究不同药剂和不同施药时期互作对烟草赤星病的影响，调查烟草赤星病发病情况，分析其防治效果。[结果]不同药剂及不同施药时期对烟草赤星病具有不同的防治效果。从不同处理烟草赤星病发病率分析，10%多抗霉素WP在旺长末期连续2次施药（每隔7 d）最有利于控制烟草赤星病发生，发病率仅为53.33%;其次是80%波尔多液WP在旺长末期连续2次施药（每隔7 d），发病率为83.33%;最后是40%菌核净WP在旺长末期连续2次施药（每隔7 d）。[结论]使用10%多抗霉素WP在旺长末期连续2次施药（每隔7 d），能有效预防烟草赤星病的发生，适宜在赣州烟区推广应用。

关键词 赣州烟区;烟草赤星病;防效;多抗霉素;旺长末期

中图分类号 S435.72文献标识码 A

文章编号 0517-6611（2020）22-0148-02

doi：10.3969/j.issn.0517-6611.2020.22.037

Screening of Pesticides for Tobacco Brown Spot Disease Control in Ganzhou Tobacco Area

LIAN  Hai1，SHEN  Chang-you1，ZHONG  Shan-liang2 et al （1.Institute of Tobacco Sciences in Ganzhou City of Jiangxi Province， Ganzhou，Jiangxi 341000;2.Xinfeng Branch， Ganzhou Tobacco Company of Jiangxi Province，Ganzhou，Jiangxi 341600）

Abstract [Objective]To screen out biological agents suitable for the promotion and application of tobacco brown spot disease in Ganzhou tobacco area and their best application time to replace or partially replace chemical agents.[Method] Through the influence of different agents and different application periods on tobacco brown spot disease，the incidence of tobacco brown spot disease was investigated and control effect was analyzed.[Result]Different drugs and different application periods had different control effects on tobacco brown spot disease.Analysis of the incidence of tobacco brown spot disease from different treatments： 10% multi-resistant WP at the end of the prosperous period of two consecutive applications （every 7 days） was most conducive to controll the occurrence of tobacco brown spot disease， the incidence rate was only 53.33%;followed by 80% Bordeaux solution WP was applied twice continuously at the end of the prosperous period （every 7 days）， and the incidence rate was 83.33%;finally， 40% sclerotium WP was applied twice continuously at the end of the prosperous period （every 7 days）.[Conclusion]The use of 10% polyoxin WP for two consecutive applications at the end of the prosperous period （every 7 days） can effectively prevent the occurrence of tobacco brown spot disease and is suitable for popularization and application in Ganzhou tobacco areas.

Key words Ganzhou tobacco area;Tobacco brown spot disease;Control effect;Polyoxin;End of prosperous period

基金項目

赣州市烟草专卖局（公司）科技项目“赣州烟草主要病虫害绿色防控体系初步构建及应用”（赣市烟技〔2016年〕9号）。

作者简介 连海（ 1980—），男，江西宁都人，实习研究员，从事烟叶生产技术研究和科技管理工作。*通信作者，高级农艺师，博士，从事烟草病虫害防治研究。

收稿日期 2020-04-28

烤烟赤星病是我国烟草种植中的主要病害之一，具有潜育期短、流行速度快等特点[1-2]。烟草赤星病主要为害成熟期烟叶，常在叶片上形成同心轮纹状病斑，对烟叶成熟度、采收率、外观等级和内在品质影响较大[3];除了为害大田成熟期烟草外，如将采后病叶装进密集式烤房烘烤，还存在赤星病在烤房内暴发流行的可能。……