河南玉米叶斑病发生的区域特征  

Regional characteristics of corn leaf spot disease occurrence in Henan

作　　者：段鹏飞[1] 刘天学[1] 李潮海[1] 

机构地区：[1]河南农业大学农学院,河南郑州450002

出　　处：《河南农业大学学报》2010年第2期196-201,共6页Journal of Henan Agricultural University

基　　金：国家粮食丰产科技工程项目(2006BAD02A07-3);河南省重大科技专项项目(081100110400)

摘　　要：2007,2008年调查了19个玉米品种在河南不同生态区(豫西南、豫中南、豫东、豫中、豫北)病害发生情况,并结合不同生态区气候条件(温度、湿度、降水、日照)对河南玉米病害发生的区域特征进行分析.结果表明,乳熟期豫东褐斑病发病最严重、腊熟期豫西南南方锈病发病最严重、腊熟期豫中南弯孢叶斑病发病最严重,豫中、豫北病害较轻.吐丝前温度是促使病原孢子萌发侵染关键因素,吐丝后降水总量、温度、湿度是促使病害发展及再侵染的主要生态条件.State-trial test for 19 maize varieties, research on corn disease in different ecological zones （ southern-western, southern-central, eastern, central and northern region ） in province of Henan for the past two years （2007,2008 year） , and combination of climatic conditions （ temperature, humidity, precipitation,Sunshine） in different ecological zones, analysis of corn disease regional characteristics occurred in Henan. The results show that： Physoderma brown spot was the most serious disease in eastern region at 20 days after silking stage, Southern corn rust was the most serious disease in southern-western region at 40 days after silking stage, Curvularia leaf spot was the most serious disease in southern-central region at 40 days after silking stage, corn disease to a lesser extent in central and northern region. As well as temperature is a key factor in promoting pathogen spores germination and invasion before silking, total precipitation, temperature with humidity are the principal ecological conditions to promote disease development and re-infect after silking.

关 键 词：玉米病害 区域特征 不同生态区 河南 

分 类 号：S432.1[农业科学—植物病理学]