Manufacturing method of tobacco leaf primary color herbarium specimen

Abstract

The invention provides a manufacturing method of a tobacco leaf primary color exsiccate. The method comprises the steps of shaping, color fixing, drying and moisturizing again. The shaping step mainly comprises: orderly overlapping absorbing paper, a moisture absorbent, absorbing paper and a specimen in a specimen holder; orderly overlapping the specimens in n layers (preferably 5-8 layers) according to the above form; fixing color for 15-18 hours at the constant temperature of 45-55 DEG C; drying for 3-6 hours at the constant temperature of 55-65 DEG C; and placing the absorbing paper and specimen in a room temperature environment with relative moisture of more than 70%, moisturizing again for 6-12 hours to obtain the primary color exsiccate. The specimen manufacturing is faster by usingthe method provided by the invention, and 6-8 days are shortened in comparison with the general pressing method, the color retention effect is good, and the color keeps the same in the specimen retention period; the water content is controlled in a range of 8-10% so as to prevent the specimen from brittle rupture and maintain the integrity of the specimen. The manufacturing method provided by theinvention is especially suitable for the manufacturing of the tobacco leaf primary color exsiccate, is especially in favor of storing the primary shape and color of the diseased tobacco leaf, and greatly improves the scientific research value and economy of the specimen.

Description

technical field [0001] The invention belongs to the technical field of making plant specimens, and in particular relates to a method for preparing cured leaf specimens with simple and quick operation and capable of maintaining the original color of tobacco leaves, and is especially suitable for making preserved leaf specimens with original color of tobacco leaf spot disease. Background technique [0002] In the prior art, the preparation methods of the primary color wax leaf specimens of plant diseases include copper acetate liquid boiling method, electric iron rapid dehydration method, microwave oven rapid dehydration method, low temperature dehydration drying method, boiling water rapid boiling method (see " wax leaf specimen preservation Green production technology", "Henan Forestry", Liu Jianhua 2000 (6): 24), and silica gel fine powder water absorption method ("Introduction of a production method to maintain the original color of wax leaf specimens", "Biology Bulletin", ...

AI Technical Summary

Problems solved by technology

However, it has been proved by practice that the above method is not suitable for making natural color wax leaf specimens of tobacco leaf spot disease: rapid dehydration method with electric iron, rapid dehydration method in microwave oven, low temperature dehydration drying method, silica gel fine powder water absorption method will easily cause lesion perforation, fall off, leaves The color turns yellow and distorted, the leaves are dry and brittle, and the veins are damp and moldy; although the copper acetate liquid boiling method and the boiling water rapid boiling method can maintain the original color of the leaves, it is also easy to cause the lesions to perforate and fall off. Pressing and drying are required, the steps are complicated, the pressing time is prolonged, and there are many uncontrollable factors in the process, resulting in poor repeatability

The Chinese invention patent "Method for making snow lotus specimens" (ZL 02108951.5) discloses a method of preparing snow lotus specimens with original colors and original colors by freezing and vacuuming. Drying and vacuuming methods to make specimens are relatively expensive equipment, cumbersome operations, and technical difficulties, so its application range is greatly limited