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Production method of plant specimen

A technology for plant specimens and production methods, applied in the fields of botany equipment and methods, plant preservation, instruments, etc., can solve the problems of uncommon preparation methods, inconvenience, and high preservation costs, and achieve good elasticity, obvious effects, and high toughness. Effect

Inactive Publication Date: 2018-09-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for preparing plant specimens to overcome the problems of inconvenient preparation methods in the prior art, inconvenient storage, observation and use, and high storage costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, a kind of plant specimen preparation method, comprises the following steps:

[0022] 1. The selected rose samples were cryogenically frozen in a cold trap at a temperature of -60°C and a constant temperature of 3 hours to ensure that the water in them was frozen into a solid.

[0023] 2. Transfer the frozen rose to a freeze vacuum dryer, adjust the pressure to 2Pa, and last for 8 hours. The vacuum environment is used to sublimate and remove the solid water inside the plant.

[0024] 3. Immerse the dried rose in toluene diisocyanate, and transfer it to a vacuum box, reduce the pressure to 10kPa and return to normal pressure immediately; reduce the pressure and restore, and cycle 3 times to make the isocyanate completely penetrate into the dry rose , filling where the moisture previously was.

[0025] 4. Take out the rose saturated with toluene diisocyanate from the isocyanate liquid, freeze again at -60°C for 1 hour, reduce the pressure in a freeze vacuum...

Embodiment 2

[0028] Embodiment 2, a kind of herbarium preparation method comprises the following steps:

[0029] 1. The selected pothos samples were cryogenically frozen in a cold trap at a temperature of -30°C and a constant temperature of 6 hours to ensure that the water in them was frozen into a solid.

[0030] 2. Transfer the frozen pothos to a freeze-vacuum dryer, adjust the pressure to 10 Pa for 12 hours, and use the vacuum environment to sublimate and remove the solid water in the plant.

[0031] 3. Immerse the dried pothos in hexamethylene diisocyanate, and transfer it to a vacuum box, reduce the pressure to 1kPa and immediately return to normal pressure; then reduce the pressure and restore, and cycle 5 times to make the hexamethylene diisocyanate The diisocyanate invades the dried pothos, filling in places where moisture previously was.

[0032] 4. Take the pothos saturated with hexamethylene diisocyanate out of the isocyanate liquid, and put it in the -60°C environment to freez...

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Abstract

The invention relates to a production method of a plant specimen. The production method comprises the following steps: 1, putting freshly-collected plants into freezing equipment and setting the temperature to -30 to -60 DEGC and the time for 3 to 6 h; 2, transferring the frozen plants into vacuum equipment and regulating the pressure to 2 to 10 Pa, wherein the duration time is 8 to 12 h; 3, immersing the dried plants into isocyanate; transferring the plants into a low-pressure environment; after lowering the pressure to 1 to 10 kPa, immediately recovering normal pressure, carrying out pressure lowering-recovery circulation operation for 3 to 5 times; 4, taking the plants saturated with the isocyanate out from isocyanate liquid; freezing for 1 to 2 h in the environment with the temperatureof -30 to -60 DEGC, and transferring the plants into the vacuum equipment; regulating the pressure to 2 to 10 Pa and immediately stopping when the isocyanate on the surfaces of the plants is completely volatilized; 5, transferring the plants into a room-temperature environment and keeping for 12 to 24 h to form macromolecule resin in the plants, so as to prepare the plant specimen. The shape of the specimen prepared by the method provided by the invention is consistent with the shape of the collected plant and the color is not changed; vines have certain toughness.

Description

Technical field: [0001] The invention belongs to the field of specimen preparation, and in particular relates to a plant specimen preparation method. Background technique: [0002] Plant specimens are an important tool in the plant teaching process, which can show most of the details of plants without being restricted by regions and seasons. A good herbarium preparation method can preserve the shape of the plant to the greatest extent, and preserve it for a long time without spoiling. [0003] It is difficult to take into account the appearance, color and storage time of common specimen preparation methods. For example, wax leaf specimens are fresh plants pressed and dried with absorbent paper. This method is simple and easy to implement, and has made great contributions to plant classification. However, due to the longer time of the water-absorbing pressing process, the plants will become discolored due to dryness during the preparation process, and the pressing process ...

Claims

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Application Information

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IPC IPC(8): A01N3/00G09B23/38
CPCA01N3/00G09B23/38
Inventor 李培枝纪来良杨晓武秋列维王霞席佳
Owner SHAANXI UNIV OF SCI & TECH
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