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林业基层单位碰到林木病害发生时,常常自己无法识别,需要采集一些标本寄请有关部门鉴定。如果采集的标本不合要求,或者处理和寄递不当,致使标本损坏变质,就会使鉴定发生困难。现将标本采集和寄递的要求和方法简要介绍于后。一、对标本本身的要求林木病害标本要具有典型症状。所谓典型症状就是能代表大多数发病林木植株或发病器官所表现的症状。如果是真菌引起的病害,在发病部位上要有病征,即病原真菌的子实体或其他器官。这是鉴定所必要的依据。
When forestry grass-roots units encounter forest diseases, they often can not identify themselves and need to collect some specimens and send them to the relevant departments for appraisal. If the collected specimens are not satisfactory, or improper handling and delivery, resulting in damage to the specimen deterioration, it will make identification difficult. Now the specimen collection and delivery requirements and methods are briefly introduced later. First, the requirements of the specimen itself Forest disease specimens should have typical symptoms. The so-called typical symptom is to represent the symptoms of most of the diseased forest plants or pathogens. If the disease is caused by fungi, there should be signs at the site of the disease, which is the fruiting body of the pathogenic fungi or other organs. This is the basis for identification necessary.