(c) The reference parameter of the board is 40×40× 1.4 (unit: cm). Used as a workbench for field work to complete plant specimens that must be covered with plastic film on site. Composite plate can be used for cutting in the market.

(d) The parameters of the sponge are: 15× 15× 10 (unit: cm). It can be used to make the force of pressing samples evenly distributed, and it can also be used to remove the residual water when cleaning plants.

(e) One side of the table paper should be white and the other side should be black. In practice, there are shirts lined with cardboard and horse manure cardboard to protect the textbooks purchased by schools.

(f) It is ideal if the width of the transparent tape can be 25 cm. If not, it's about 10 cm. Of course, a little wider is better.

(g) 2。 Specific production steps:

(1) Specimen collection:

Except that some specimens were made in the field and were not brought back to the laboratory, most of the methods were the same as those in the textbook.

(2) Pretreatment of samples:

Pretreatment mainly includes: (a) cleaning the soil of plants with a hand-held watering can, and absorbing the residual water on the surface with a sponge. (b) pruning plants. That is, remove some repetitive, irrelevant, insect-damaged, damaged leaves and redundant leaves, fruits and flowers. You can cut off half of the back of the stem that is too thick (C) and shape it, that is, put the plant in a suitable position on the table paper and put the back of a proper amount of leaves outward. After plants are placed and shaped, stress and deformation will inevitably occur, and it is difficult to achieve the purpose of reasonable placement. The fresh plants on the table paper are not on the same plane. At this time, it is still not ideal to press them with a sponge. 0.8cm wide transparent tape can be used to fix the part that needs temporary fixing in the proper position of the table paper. (d) In addition, parts with plant characteristics can be displayed, such as elderberry bark with lenticels and obvious pith, and perilla stem with square cross section.