不同栽培模式对玉米大斑病发生和流行的影响  

Effects of Different Cultivation Patterns on the Occurrence and Epidemic of Northern Leaf Blight on Maize

作　　者：于舒怡[1] 傅俊范[1] 周如军[1] 康晓军[1] 刘博[1] 

机构地区：[1]沈阳农业大学植物保护学院,沈阳110161

出　　处：《玉米科学》2011年第1期132-135,共4页Journal of Maize Sciences

基　　金：国家粮丰工程项目"东北平原南部(辽宁)春玉米丰效技术集成研究与示范"(2006BAD02A12)

摘　　要：2009年对四平地区不同栽培模式下玉米大斑病自然发病情况进行调查。分析表明,Logistic模型能够反映大斑病流行时间动态情况。免耕模式有利于玉米大斑病的发生,而在宽窄行模式下该病发生较轻。不同栽培模式下玉米大斑病的指数增长期不同,在免耕模式下的病情指数最高,依次为免耕、平播、常规、宽窄行栽培模式,该时期也是最佳药剂防治时间。玉米大斑病流行过程中的病情严重程度依次为免耕>平播>常规>宽窄行。Northern leaf blight was investigated with tested cultivars on different cultivation patterns in Siping area, 2009. Through comparing and analyzing, Logistic model could well reflect the temporal dynamic of maize north- ern leaf blight in field by natural infection. No-till with straw cover was beneficial to the disease occurrence; occur- rence degree of the disease in wide-narrow row was lower than other cultivation patterns. The exponential phases were different with different cultivation patterns. The sequence was No-till with straw cover （NTS）, flat planting （FP）, con- ventional tillage （CT） and wide-narrow row （WNR）. The exponential phase was also the best time to chemical control. The order of disease severity among tested cuhivars on different cultivation patterns was NTS 〉 FP 〉 CT 〉 WNR.

关 键 词：玉米大斑病 栽培模式 病害流行 

分 类 号：S435.131[农业科学—农业昆虫与害虫防治]