文章编号:1000 - 2286 (2002) 06 - 0783 - 03

    车前草白粉病发生规律与防治研究

    陈须文1

    ,盛传华2

    ,李庚花1

    (1.江西农业大学 农学院 ,江西 南昌 330045 ; 2.江西桑海企业集团 ,江西 新建 330115)

    摘要:车前草白粉病( Erysiphe cichoracearum)是车前草上一种重要病害 ,主要为害叶片和穗部。病菌以菌丝

    体和闭囊壳在车前草的病苗上越冬。次年春季在菌丝体上产生分孢子和闭囊壳中释放子囊孢子侵染车前草 ,引起发病。南昌地区车前草叶片于 4 月中旬开始发病 ,5 月中旬达到发病高峰;穗部于 5 月上旬开始发病 ,6

    月上旬达到发病高峰。温度 20～25 ℃,晴天或多云 ,并有短时小雨 ,有利此病发生发展。温度高于 28 ℃,雨

    日多、雨量大、会抑制其扩展蔓延。氮肥施用过量 ,发病重。田间药效试验结果表明;25 %敌力脱 EC防治效

    果最佳 ,达 89. 9 %;其次 60 %防霉宝 WP防效 74. 3 %。

    关键词:车前草;白粉病;发生规律;防治

    中图分类号:S432 文献标识码:A

    Studies on Occurrence Lawand Control of Powdery

    Mildew in Plantain

    CHEN Xu - wen1

    ,SHEN G Chuan - hua

    2

    , L I Geng - hua

    1

    (1 College of Agronomy ,JAU ,Nanchang 330045 ,China ; 2 J iangxi Sanghai Enterprise Group ,Xinjian

    330115 ,China)

    Abstract : Plantain powdery mildew ( Erysi phe cichoracearum) is an important disease in plantain. The

    pathogen survives the winter period in the f rom of mycelia and cleistothecia in plantain seedlings. In the fol2

    lowing spring , condia which develop f rom the mycelia and ascospores which are released f rom the cleistothe2

    cia spread and cause new infection. It is harmful to plantain’ s leaves and f ringes. The leaves get it in middle

    April and it s peak occurs in middle May , but the f ringes get it in early May and it s peak is in early J une.

    The disease develops quickly on sunny , cloudy or occasional slight rainy day with the temperature of 20～

    25 ℃, but it will be cont rolled on heavy rainy day with the temperature above 28 ℃. Overusing nit rogenous

    fertilizer will lead to a heavy disease. The experiment indicated that 25 % tilt’ s curative effect was 89. 9 % ,which was the most effective , 60 % Fang Mei Bao with curative effect of 74. 3 % was the second.

    Key words : plantain ; powdery mildew ; occurrence law ; cont rol

    车前草( Plantago asiat ica L . )属车前草科 ,是一种重要的药用植物 ......