Plant illustration stick figure calendar-how to draw in sunflower

How to draw a simple and beautiful plant The simple and beautiful plant painting method is as follows:

The first step: draw the trunk, pay attention to the characteristics of thin head and round head, and it is more natural to have a smaller arc. Then draw branches, one with thick head and thin tail, and the other with thick head and thin tail. See which one you like. Personally, I think the first one is suitable for short branches and the second one is suitable for long branches. Finally, improve the modification to ensure that all connection parts are round and smooth.

Step 2: Choose a picture you like. I chose a plant specimen here. After selecting the picture, we observed that the leaves of this plant are relatively flat and long, based on the middle pole, and the leaves go to both sides and slightly upward.

Step 3: If you are a beginner, it is normal to master the lines badly. It is suggested that you try to practice a leaf in this picture before taking the manuscript. Generally speaking, plant line drawing is mainly about practicing lines. If you can draw one line, there will never be two.

Step 4: Practice a little bit and start drawing one by one! The painted plants don't have to be exactly the same as the pictures, as long as the whole bunch of feet or shapes are roughly the same, and the lines are smooth, or the lines are mainly emphasized: radian, rather than rigidity and vitality. Where you draw small flowers, pay attention to writing lightly, so that the lines will become thinner and the picture will be more layered.

Step 5: According to your own preferences, it can be somewhat different, mainly because the overall picture should look good. Try to practice tree by tree. These oak trees are very conventional and easy to draw, and they have the highest appearance rate in illustrations with people and animals.

Long Kuihua How to Draw Long Kuihua's Stick Figure Practice Illustration Steps Draw a leaf of Long Kuihua on paper with a pencil, then draw a vein on it, and then draw a color.

Solanumnigrum, also known as Solanum nigrum, Solanum nigrum, Solanum nigrum, Solanum nigrum, Solanum nigrum, Solanum nigrum belongs to the genus Panicum of Solanaceae, which is widely distributed in Eurasia and also transplanted to the United States, Australia and other places. The whole grass is 30- 120 cm high, with alternate leaves, oval or heart-shaped, and black berries. Berries and leaves are edible, but leaves contain a lot of alkaloids and must be cooked before detoxification.

The efficacy and function of editing Solanum nigrum

Effect on blood sugar

When rats were injected with solanine (50- 100mg/kg) intraperitoneally, the blood sugar was increased (aglycone had no effect), but it was not increased in alloxan diabetic rats. Rats after adrenalectomy will die within 3-4 hours after injection, when blood sugar decreases and lactic acid increases. Oral glucose can delay the death of animals.

Intraperitoneal injection of solanine (5-30mg/kg) in rats can also increase blood sugar and significantly reduce glucose tolerance (test); For rats with adrenalectomy, it can lead to blood sugar reduction and death (if fasting 24 hours in advance, blood sugar will decrease less and will not die), so its influence on blood sugar is related to adrenal gland. Inhibiting the utilization of peripheral glucose is one of the principles of raising blood sugar. [ 1]

Effect on central nervous system

Solasodine containing 0.5mg/kg can enhance the reactivity of the cerebral cortex of rats or rabbits to stimuli and enhance the conditioned reflex activity. However, if it is given once for 5- 10 day or 5mg/kg continuously, the result will be contrary, and the sensitivity to pain will be reduced at high dose.

The results show that a small amount of solanine can enhance the excitation process of the central nervous system of animals (rats and rabbits), while a large amount of solanine can enhance the inhibition process.

The picture of grass is as follows:

1. Explain the basic knowledge of drawing grass in plants.

Grass, also known as grass, grassland, grassland, etc. It is a large and almost ubiquitous monocotyledonous flowering plant. The stems of grass are hollow except for nodes, and there are two rows of narrow alternate leaves separated. The lower part of each leaf surrounds the stem, forming a leaf sheath. Then how can we draw grass well? Then let's learn how to draw grass together!

Second, the painting techniques of plants and grass

Sketch: Super-simple sketch

Step 1: Start with an irregular curve and draw some flat circles for some stones and pebbles on the ground.

Step 2: Draw grass with some curves. Each curve points to their top. First, draw grass from the left. The curve on the left should be bent to the left, and the curve in the middle should be slightly bent to the left.

Step 3: Every grass has a certain distance. Then draw the grass in the middle and right. Curves are also used for drawing. The first grass bends to the right and the second grass faces to the left, so there is a contrast. The rest of the grass bends to the right.

Step 4: Create a new layer, draw a big stone behind the grass, and draw some circles around the stone as small stones. Draw a picture next to the grass like the grass that just came out.

The last step: build a new layer, paint it with stones and grass, and the simple grass will be finished!