盐碱地玉米青枯病的发病规律研究

Research on the Occurrence Regularity of Corn Bacterial Wilt in the Saline-alkali Soil

通过对盐碱地玉米青枯病的发病规律调查研究发现,盐碱地玉米青枯病发病率与品种抗性、栽培条件密切相关。结果表明,播种期越早,青枯病发病率越重;种植密度越大发病率越高。经品种抗病性鉴定,初步明确了当前黑龙江省主栽及推广玉米品种的抗性表现,10份鉴定材料中有5份高抗、2份抗病、1份为中抗、1份感病、1份高感。

Through the investigations of the occurrence regularity of corn bacterial wilt in the salinealkali soil suggested that bacterial wilt incidence was closely related to the resistance of variety and cultivation conditions.The results showed that the earlier seeding time and the higher planting density,the higher incidence of bacterial wilt.Through the identification of disease resistance,the resistance of main and popularized maize varieties in Heilongjiang province was preliminarily defined,of the10identified materials,5were high resistant varieties,2were resistant varieties,1was middle resistant variety,1was susceptible variety and1was high susceptible variety.