Study on some problems of maize curvularia leaf spot caused by curvularia lunata
2006
Wang Chun, Chen Limei, Guo Xiaoqin
Chinese. 对吉林省玉米弯孢菌叶斑病的发生和防治几个问题进行试验研究。结果表明:室内保存1～3年的病叶、当年室外越冬的病叶均具有产孢能力;玉米生育期对弯孢菌侵染概率有明显的影响,生育前期侵染概率高,抗侵染力低,生育后期侵染概率低,抗侵染力强;施用氮肥、磷肥对玉米弯孢菌侵染概率影响不明显,而钾肥能降低侵染概率。对生产中一些玉米品种、自交系进行抗病性鉴定,如吉玉106、CM1、济单7号、吉846、5002表现抗性较好。筛选出对防治弯孢菌叶斑病有效的药剂:甲基托布津防效最高,可达91.59%;其次是炭疽福美、速克灵,防效也分别达88.37%和82.98%;代森锰锌的防效为78.37%。
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