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第五章 植物病害的诊断原理与方法 PowerPoint PPT Presentation


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《 园林植物常见病害鉴别与防治技术 》. 第五章 植物病害的诊断原理与方法. 任课教师 何 笙. 第一节 植物病害诊断的基本原理. 一、病害诊断的重要性 对症下药 — 对症防治 — 是有效防治的前提和基础 执业条件 — 准确诊断病害 — 必须掌握的本领. 诊断的意义. 诊断是防治的前提,诊断正确,防治才能有的放矢。 及时准确的诊断,采取合适的防治措施,可以挽救植物的生命和产量。 如果诊断不当或失误 ( 误诊 ) ,就会贻误时机,造成重大损失。. 二、诊断与鉴定

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第五章 植物病害的诊断原理与方法

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