植物保护基本知识 第一讲 植物病害的概念和诊断

• 作 者: 陈璧
• 机 构: 北京农业大学,
• 出 处: 河北农业科技
• 发表日期: 1985年01期
• 关键词: 植物病害 植物保护 自然灾害 不可知 农业生产 虫害 第一 自然发生说 侵染性 非侵染性病害

一、病害的概念植物病害与虫害一样是严重威胁农业生产、农产品储藏、人民生活的一种自然灾害。但人们对病害发生的原因,则经历了一个从无知到逐渐有所认识的过程。18世纪以前,对病害的看法是神道观念的唯心的看法,把病害当成天害,瘟疫,是不可知的。18世纪开始,学者们积极观察病害的发生情形按其不正常表现作了许多分类,但对其发生的本质

First, the concept of disease Plant diseases and pests are the same as a serious threat to agricultural production, storage of agricultural products, people’s lives a natural disaster. However, people have experienced a disease from the ignorance to gradually become aware of the process. Before the eighteenth century, the view of disease was the ideal view of Shintoism. It is unknowable to treat the disease as a heavens, plague. Beginning in the 18th century, scholars actively observed the occurrence of diseases according to their abnormal performance made a lot of classification, but the nature of its occurrence