How do you make a leaf specimen? How to make a leaf specimen

To a small amount of dilute sodium hydroxide solution (or an appropriate amount of freshly prepared hydrated lime and soda ash mixed with water and boiled to obtain a suspension), put a few leaves and soak the leaves in the solution, boil for 6 10 min. Take out the leaves and wash them in clean water to remove the lye, then gently brush off the mesophyll with a brush, and dry the leaf veins until they are semi-dry.

The foliage specimen is made as follows:

Material preparation: a piece of paper, leaves, scissors, latex.

The operation is as follows: 1. Collection and rough selection: Leaves with petioles should be collected, and attention should be paid to the collection of leaves of various shapes and colors, each type of sail leaf should be collected more, the same kind of leaf should also be collected more, do not collect large leaves (it is too obvious rhizome, it is not easy to cut when used), and do not pick rotten, damaged, and eggs of leaves.

2. Sorting and pressing: Put the collected leaves, put them in a book, and flatten them with a book. The purpose of pressing is to make the leaves dry and flat, that is, to shape the leaves, but one night is good, not too dry, otherwise it is not easy to cut and easy to break.

In addition, try to press as many leaves as possible in the book as an alternative.

3. Composition and naming: Composition is a key step in making leaf paintings. The content of leaf paintings is very extensive, but attention should be paid to the reasonableness, ingenuity and novelty of the composition.

Each leaf can be placed upside, upside down, diagonally, and shielded from each other, so you should think about it in advance. "Cutting the leaves of the old tree" is not like the effect of drawing with a "pen", it cannot be cut arbitrarily, on the contrary, it cannot be formed.

4. Fixing: Fixing is to put the leaves that look good and stick them on the paper you want to make a drawing, and use latex instead of glue and paste, because latex dries quickly, sticks firmly, and can keep the leaf surface clean. (Try double-sided tape, and then use scotch tape to secure the top layer.) ）

The steps to make a leaf specimen are as follows:

Choose leaves: Choose leaves that are intact, pest-free, and damage-free.

Prepare materials: Prepare dry newspapers, scotch tape, labels, pens, etc.

Lay out the leaves: Place the leaves on the newspaper and the leaves to make them flat.

Fix the leaves: Attach the leaves to the newspaper with scotch tape, taking care not to obscure the shape and features of the leaves.

Labeling information: Write information such as tree species, collection time, and collection location on the label, and fix the label on the newspaper with scotch tape.

Dry preservation: Place the prepared leaf specimen in a ventilated and dry place, wait for the leaves to dry completely, and then put it in a specimen bag for preservation.

Precautions: Be careful not to choose poisonous species when choosing leaves.

When making specimens, care should be taken not to damage the leaves to avoid affecting the observation value of the specimen.

The labeled information should be accurate and clear, so as to facilitate subsequent identification and research.

To maintain the original color of the leaf specimen, the materials needed: resin, leaves, measuring cups, droppers, paper boxes.

Step 1: Select the leaves that need to be made into specimens, and the leaves should be complete, clean, and neatly edged.

Step 2: Place the leaves in a suitably sized carton.

Step 3: Pour the resin into a measuring cup.

Step 4: Gently agitate the resin with a dropper.

Step 5: Pour the resin into the carton.

Step 6: Gently press the petiole of the leaf with the dropper.

Step 7: Gently press the leaves and gently submerge the resin over the leaves to finally reach a state where the leaves are completely covered by resin.

Step 8: After twenty-four hours of sitting, the resin dries completely. The specimen is finished, and the specimen with the box can also be polished, removing the outer cardboard box, so that the leaf specimen will be more completely aesthetically pleasing.

Method of preparation of leaf specimens: pressing method.

Prepare a wooden specimen clip, and when pressing, the head and tail of the specimen should be reversed from time to time. In order to facilitate the rapid drying of the specimen and preserve the intrinsic color, the hot straw paper can be changed once or twice a day about the second or third day after pressing. After the specimen is pressed, it is nailed to a piece of tough white paper with a needle and thread, and a label is attached to the lower right corner, and then it is loaded into a specimen cabinet with some camphor to prevent insects.

1. Collection. It is required to be representative and typical, with intact, no mutilation, and no insect pests.

2. Finishing. The collected leaf specimens are placed on absorbent paper and arranged so that the branches and leaves are stretched and kept in a state of self-recklessness.

3. Flattening, ridge shelter and drying.

This is the key link. Lay several layers of absorbent paper on each layer of the specimen clip, put a copy of the specimen, and then fix the specimen with a specimen clip, tie it with a rope, and place it in a ventilated place. In order to speed up the drying of the specimen, the paper should be changed in time every day to allow it to dry thoroughly.

4. Mounting (table paper).

Binding refers to the binding of plant leaf specimens on a piece of cardboard (table paper). There are many ways to attach plant wax leaves to table paper, using small strips of paper, tape, thin thread or paste. When binding, the position of the cherry eggplant specimen should be appropriate, and any part should not be exposed, and it should be directly pasted with glue.

Write the name of the specimen underneath the leaf. Finally, it can be glued.