摘要
根据不同黄花菜品种叶和花苔病斑上分离的病菌交互接种以及病原形态镜检,PDA培养基上24℃生长速度,认为黄花菜叶斑病病原为Fusarium cencolor Rg.。病菌初侵染来源为上一年病叶、花苔与土壤。低温多雨年份易造成病害流行。秋冬季清除病叶、花苔,培无病土,施足基肥,春季苗期不追氮肥,发病始期开始喷70％甲基托布津可湿性粉剂1000倍液,每7天1次,连续3次,可以收到防病增产的效果。
According to pathogenicity and morphology of pathogens isolatedfrom lesions on the leaves and pedicels of different varieties of grassleafdaylily,the pathogen was identified as Fusarium cencolar Rg.Thesource of primary infection of the pathogens come from diseasedleaves,padicels and infested soils.Low temperature and high precipita-tion in spring season usually result in outbreak of this disease.Thecontrol methodes of the disease consist of cleaning field from diseasedleaves and pedicels and hilling plants roots with uninfested soils inautumn or winter,not excessively applying the fertilizer N and spraying0.07% Topkin M (a.i.) for three times in spring.
出处
《植物保护学报》
CAS
CSCD
北大核心
1989年第2期81-85,共5页
Journal of Plant Protection
关键词
黄花
叶斑病
防治
病原菌
Hemerocallis minor
Fusarium cencolor
control
