南方农业学报2011，Vol.42Issue(2)：161-163,3.
玉米弯孢菌叶斑病田间发生动态研究
Dynamics of maize Curvularia leaf spot occurrence
摘要
Abstract
[Objective] The experiment was undertaken to investigate the dynamics of maize Curvularia leafspot to provide the theoretical basis for development of its control measures for sustaining maize production. [Method ] Incidence of infected plants and disease index of maize Curvularia leaf spot were investigated using artificial inoculation and field investigation methods.Occurrence regularity and disease resistance at different growth stages were also worked out by determining size of lesions and sporulation quantity. [Result] The first incidence of maize Curvularia leafspot was observed in mid May, followed by a rapid increase in disease index from late May to mid July in Ya'an during 2004. The incidence was found highest at booting stage, moderate at full-grown stage, and least at seedling stage. Further, the size of lesions and sporulation quantity were found higher in lower leaves compared to those on the tops. [Conclusion] The first period of maize Curvularia leafspot was in mid May in Ya' an,Sichuan, maize seedling had the best and worst resistance in seedling stage and booting stage, respectively. The upper leaves of maize were more resistant to maize Curvularia leaf spot than the bottom leaves.关键词
玉米弯孢菌叶斑病/发生动态/抗病性/四川雅安Key words
maize Curvularia leaf spot/ occurrence dynamics/ resistance/ Ya' an of Sichuan分类
农业科技引用本文复制引用
刁毅,叶华智..玉米弯孢菌叶斑病田间发生动态研究[J].南方农业学报,2011,42(2):161-163,3.基金项目
攀枝花学院预研项目(114034) （114034）
