不同温度时间对草本植物标本烘干质量的影响

Effects of Different Temperatures and Different Times on the Drying Quality of Herbaceous Plants

摘要: 标本烘干是标本制作重要步骤之一，本文通过研究不同烘干温度与不同烘干时间处理对标本质量的影响，以提高标本保存质量。以6种草本植物为材料，采用不同温度(35℃、45℃、55℃和65℃)和不同时间(12 h、24 h和36 h)进行处理，采用标准比色卡和水活度测量仪分别对植物标本叶色和水分活度进行比对和测试。结果表明：草本植物的最佳烘干条件为55℃、36 h，在该烘干条件下标本颜色退化程度最低，标本最稳定的水分活度值为0.20 Aw。

Abstract: The specimens drying is one important step of specimen making. In this paper, effects of different drying temperature and drying time on the specimen’s quality were studied to improve the con-served quality of samples. Six herbaceous plants were treated under different temperatures (35˚C, 45˚C, 55˚C and 65˚C) and different times (12 h, 24 h and 36 h), the leaves’ colors were compared with the colourimetric card and water activity under different treatments was tested. The results showed that the specimens have been optimal situation after drying under 55˚C for 36 h, which has the lowest fading degree and stabilized water activity (0.20 Aw).