论文部分内容阅读
在调查杂草的分布和生态习性的同时,必须采集和制作标本,有助于鉴定杂草。杂草鉴定主要依据其花、果和种子,因此要采集带花和籽实的标本,并且要有完整的营养体。而杂草防除又主要在幼苗期,故还须采集幼苗。采集时要认真作野外记录。每种杂草应采集完整的标本3～5份,供研究、交换和保存。标本采集后应编号并挂上小标签,及时压制防止变形。
While investigating the distribution and ecological habits of weeds, specimens must be collected and produced to help identify weeds. Weeds identification is mainly based on its flowers, fruits and seeds, it is necessary to collect specimens with flowers and seeds, and to have a complete body of nutrients. The weed control and mainly in the seedling stage, it is also necessary to collect seedlings. Collection should be carefully recorded for the wild. Each weed should be collected from 3 to 5 complete specimens for research, exchange and conservation. Specimen collection should be numbered and linked to a small label, timely suppression to prevent deformation.