Descriptive text of plants

I believe that everyone will inevitably come into contact with the composition, especially the explanatory text that can not be ignored in the composition. Explanatory writing is an article genre with explanation as its main expression. How do we write this type of composition? The following are the treatise articles about plants that I collected for you. Welcome everyone to refer to it, I hope it will help you.

Explanatory article about plants 1 There are potted plants in the street. A young couple, with dark faces and smiles, kept nodding to people: "This is easy to raise, aloe. You don't need to feed him water for half a month. "

I rode by, and when I heard this, I suddenly stopped. There is nothing wrong with me, but I like potted plants, but people are particularly lazy. Those large and small potted plants I moved home, such as Siraitia grosvenorii, gardenia and green radish, were all left in the corner to die. Occasionally think of their benefits, go and see, only the yellow branches are left, facing the sunset with infinite injuries. One day after dinner, I leaned against the door and chatted with my neighbors. He talked about a lucky tree raised at home, saying that it was only a small crown when it was bought, and now it is close to the ceiling. "You don't know how gratifying it is, with green eyes. It seems that he is going to spend all his youth. It's really strange that I didn't take care of it that hard. He works so hard. "

I turned my head back to the door disdainfully. Hum, obviously angry because he can't take care of plants. This is a joke. Am I a woman's family instead of a big man like you? Why are you putting on such a shelf?

The opportunity has finally come. I saw aloe for the first time. Dundun is thick, fleshy and juicy, and not proud. He stood casually among many potted plants. I pointed to them and said, "Boss, aloe?" Give me three. "Handsome white wife of shop-owner wearing a green skirt. When she heard that Tingting was coming, she carefully wrapped three aloe trees in a newspaper and handed them to her. "Sister, here you are. This kind of aloe is easy to raise. Give it a drink when you remember. Don't worry if you can't remember. It doesn't matter if I don't see him for ten and a half months. He is not a delicate plant, and will thrive if he is abandoned in the sand. "I was shocked. I've only heard that "flowers in a greenhouse" refers to those fragile plants that are kept indoors. It never occurred to me that once in a while, you can live well with aloe.

The aloe vera I brought home with joy was really a great success. In the busy work, no matter how many days I ignore him, he is still thick, juicy and green, and he wants to take a bite. Hehe, life is not that exquisite. It's good to make aloe.

There is a ginkgo tree in front of my house, which is as high as three floors.

In spring, Ginkgo biloba leaves are green, like a lively and lovely baby. When the wind blows, it seems to be waving to you.

Ginkgo trees are more eye-catching in summer, and their leaves change from light green to green, like a small fan. Sitting under the tree, you can still feel the coolness and feel very comfortable.

In autumn, the leaves turn yellow slowly. A gust of autumn wind blew, and every leaf reluctantly left Mother Tree and returned to Father Earth. Everyone is busy picking ginkgo leaves, because the tea made from ginkgo leaves tastes delicious and refreshing.

In winter, ginkgo trees don't need human protection like other trees. They have strong vitality, just like a strong and brave soldier.

The ginkgo tree in front of my house has lived for hundreds of years and is now protected by the Forestry Bureau. I love the ginkgo tree in front of my house!

Plant 3' s snow-white body exudes fragrance. Besides our loveliest gardenia, which other flower has this feature? Every year in the middle and late May, we can see one or two petite and beautiful gardenias in the hands of men, women and children.

We like gardenia because it is beautiful and fragrant. However, do you know other characteristics and functions of gardenia? Next, I'll introduce it to you!

Gardenia, also known as peony, likes a warm and humid environment with sufficient light and good ventilation, but it is suitable for living in a slightly cloudy place, resistant to semi-shade, afraid of stagnant water and relatively cold-resistant. There are eight main types of gardenia, gardenia, gardenia, gardenia, gardenia, gardenia, gardenia, gardenia, gardenia, gardenia, gardenia, gardenia.

What we often see is gardenia. The branches are green and the young branches have scaly hairs. Leaves opposite or 3-bladed; Oblong-lanceolate or ovoid-lanceolate, 7 ~14cm long and 2 ~ 5cm wide, with tapering or short top, whole margin, white edge, smooth edge and leathery; There is a short handle; Stipules are membranous, and a sheath is synthesized at the base. Flowers are large, solitary in branches or leaf axils, about 7 cm in diameter, white and very fragrant; Calyx lobes, linear; Corolla lobes broadly oblanceolate; Stamens, anthers linear; The ovary is inferior, with cells 1, thick style and rod-shaped stigma.

The fruit is obovate or oblong, with a length of 3 ~ 7 cm, a diameter of 1 ~ 1.5 cm, yellow, high longitudinal edges, thick pericarp and persistent calyx. The flowering period is from May to July. Distributed in central and southern China. Variety characteristics: Different from the original variety, the flowers are big and heavy and do not bear fruit.

Gardenia is not only small and exquisite, but also can be used as medicine, which has the effects of purging fire and relieving annoyance, diminishing inflammation and reducing fever, clearing away heat and diuresis, cooling blood and detoxifying. This shows that gardenia really plays a great role.

Gardenia is luxuriant in foliage, evergreen in all seasons, elegant in fragrance, with green leaves and white flowers. It is particularly beautiful and lovely, and it is an excellent landscaping material in the courtyard. Suitable for terrace, Chi Pan, roadside configuration, can also be used as a flower fence, potted plants, bonsai viewing, flowers can also be used for flower arrangement, wearing decoration. The peel can be dyed yellow, and the wood is hard and meticulous, so it is a good carving material.

Description of Plants Article 4 Although the rose does not have the reputation of "the king of flowers", its purity, beauty and tenacious vitality are intoxicating.

Rose originated in China and has a long history of cultivation. It is not only an excellent flowering shrub, but also an important spice.

Deciduous erect tufted shrub with gray-brown stems and barbs, pinnately compound leaves, 5-9 leaflets, elliptic to elliptic obovate, obtuse and round serrations, thick and wrinkled, bright green at the top, gray-green at the bottom, pilose or spiny hairs, and sparse spines and glandular hairs on petioles and leaf axes. Stipules are mostly connected with petioles and have fine serrations. Flowers solitary or 3-6 in clusters, 6-8 cm in diameter. Flowers are fragrant, densely hairy and prickly, petals are purple or white, single or double. Rose fruit is oblate and red, and the tablet lasts. The flowering period is from May to September, and the fruiting period is from September to June.

At present, there are more than 100 varieties of roses, including white roses, red roses, blue roses, pink roses, light pink roses, yellow roses, double-color roses and so on. In fact, most roses are new varieties developed by improving several common roses.

There are not many original species of roses, but after cross breeding, at least 1.5 million species have been officially registered. According to the size of roses, they can be divided into four categories: big wheel, middle wheel, small wheel and rattan wheel. Dallas, with crimson flowers, big buds, hard petals, dark green leaves, hard and straight branches and many thorns.

Its grading standard is: Grade I, with the length of flower branches more than 60cm, thick flower branches, full and bright buds, dark green leaves and no pests and diseases. Grade II, the flower branch is 45-60cm long, the flower branch is thick, the leaves are dark green, the buds are full, and there are no pests and diseases. Grade ⅲ, the length of flower branches is less than 45cm, the flower branches are thinner, the leaves are yellow-green, and the flower buds are slightly damaged.

Notes on Plants 5 Mimosa grows on sunny grasslands and is an annual plant.

The stems of mimosa are thin and long, with tiny hairs on the stems and dark red roots. The color becomes lighter as it goes up and turns green at the top. There are many sharp thorns at the fork of the stem, as if to say, "Don't look at my short stature, if you bully me, I will be impolite!" " "

Mimosa has a tiny petiole on its stem, and two feather shafts protrude from the front end, each of which has two rows of oval leaves. A chubby thing at the bottom is called a leaf pillow. The newly grown leaves are light green with a little fluff, which looks very delicate. The edge of the grown leaves is crimson, like a leaf inlaid with crimson lace.

The pollen of mimosa is purple, as lovely as dandelion's pompoms.

Mimosa is very popular because its leaves are interesting. Gently touch one or two leaves, one or two leaves will close, like a shy little girl slowly turning her head; Touching the rain shaft hard, the leaves suddenly closed, like a butterfly with its wings closed; Touching the whole mimosa, the leaves closed first, and then the petiole drooped, like a wronged child.

Why are mimosa "shy"? It turns out that there are many parenchyma cells in its occipital, which are very sensitive to stimulation. Once it touches the leaf, the stimulus is immediately transmitted to the leaf pillow, and the liquid in the cell begins to flow to the intercellular space, thus reducing the cell expansion force. At this time, the pressure at the lower part of the pillow is reduced, so the leaves are closed and the petiole is drooping.

I like this wonderful mimosa.

Explain the sixth article about plants. People often think that pine trees are too ordinary, neither as beautiful as flowers or willows, nor as elegant as willows. But I think the tenacity and straightness of pine trees are incomparable to other flowers and trees.

In spring, flowers bloom and birds sing. Show the new green grass and dance gently in the spring breeze. White chrysanthemums that are no longer timid, slowly raise their heads, try cold and warm, and then bloom one after another; The butterfly that shook off the water drops also erased the last breath of winter and stretched the delicate petals; At this time, the pine tree changed from green to new green and was full of vitality. It stood there quietly, enjoying the beautiful scenery of spring.

In summer, other flowers and plants hang their heads under the strong sunlight, so they are listless. Only pine trees are still standing there in the heat, swaying with the wind. The heavy rain came, as if all the flowers and plants were in a panic, but it was silently waiting for another test. After the rain cleared, it nodded and smiled in the breeze to celebrate the victory of the experiment.

Autumn is the harvest season. Pine trees also bear many fruits. The shape of the pine cone is dark brown, and the whole branch is covered with layers of things. Its hard shell breeds new life and new hope.

In winter, flying snow falls on pine trees, changing them into white clothes. Through the dress, you can vaguely see the green of pine trees. People can't help but think of marshal Chen Yi's song "Pine and cypress": heavy snow presses pine and cypress, and pine and cypress are tall and straight. You should know that pine trees are noble and noble before melting.

Pine trees are so tall and straight all year round. Despite so many ups and downs, it is still so strong and unyielding, so vigorous and upward, and still stands stubbornly between heaven and earth. Ah! Pine tree, you will always be an iron warrior in my heart, and your spirit will always accompany me all my life!

Explanatory article on plants 7 Once the succulents are on the market, they are very popular with people, especially girls.

First of all, what is meaty? Baidu's explanation is that succulents are used in gardening, also known as succulents or succulents. Succulent plants refer to higher plants with hypertrophy of vegetative organs, which usually have three vegetative organs: root, stem and leaf, and three reproductive organs: flower, fruit and seed.

But there are also many problems, such as too much watering, not mixing soil, unsuitable growing environment and too much water. So, I went online to find an expert to check, and it did pay off.

First of all, it is best to suggest watering can spraying. Under normal circumstances, water should not be sprayed from above, but must be poured enough. Moreover, the soil must be loosened frequently, so that the basin soil can absorb enough water easily and evenly, and the basin soil should be kept moist without water accumulation, and the water should be poured thoroughly, without water accumulation and too dry. Summer varieties can be properly watered, but not too much, so as not to drown more meat. And if it is rainy or the temperature drops suddenly, it is necessary to stop watering.

As for fertilization, winter-type and intermediate-type succulents apply decomposed dilute liquid fertilizer or compound fertilizer once every 20 days or so. Fertilization time can be in sunny morning, so don't splash fertilizer solution on plants to avoid burns. Fertilization is not needed in summer.

According to experts, the temperature of 15~28 is the most suitable for raising meat, but if the temperature is 5~35, it is the limit that meat can bear. This must be remembered, be careful that the meat will freeze to death or dry to death.

You can also use pebbles to pave the road, and try to choose one with strong water absorption and sufficient porosity. So as to accelerate that wat emission on the soil surface and be beneficial to the drying and wet of succulent seeds.

Mixing soil is one of the most important links. Although there is no need to care too much, it is better to moisturize. Experts mean that coconut milk, 1-3mm granular soil and vermiculite can be considered in any proportion. Generally, granular soil accounts for less than 1/3, and vermiculite can be less.

Some succulents have small and unstable seedlings, and paving stones can also fix succulents.

Seeing the above method, do you also have a preliminary understanding of meaty? Moreover, experts also say that the fleshy new generation grows very fast and can keep the characteristics of their parents as lovely. Sowing also belongs to sexual reproduction, which is generally used to cultivate new varieties, and it is also possible to get mutant varieties.

Action is not as good as action, so hurry up! My relatives grow cute and fleshy, and let them breed and grow fleshy, which is a necessary birthday gift for relatives and friends.

Explain the eighth article about plants. In the morning, my family came to Lianhuazhuang for a walk, and the banana forest on the roadside attracted me.

Banana trees are tall and have big leaves; It is round, about 1.5 meters long and about 30 centimeters wide. The leaves are emerald green, the main veins are thick, and the veins on both sides are parallel. Like a few big fans, I can't help but think of the banana fan of Princess Tiefan in Journey to the West. If I can pick a leaf and take it home, how cool it would be to fan my mother. My mother will definitely praise me as a good boy.

I suddenly found a long stick among the leaves at the top of a banana tree. There is a huge bud at the top of the stick, like a lotus flower bud, but the color is light green.

Listen to dad: bananas can eat the nutrition of bananas and look similar, but bananas are not crescent-shaped, they are much smaller. However, from the perspective of Chinese medicine, it has the effect of relaxing bowels, but bananas are cool and plantain is flat, so people who are afraid of cold should not eat more, and the general elderly should eat plantain. Dad, banana buds are really big. Isn't it beautiful when it's opened? Father smiled and let me have a closer look.

I looked at this big bud from another angle, and I found something new: a petal of the bud unfolded, revealing two rows of long flowers, each with more than a dozen flowers. The petals are white, one large and one small, as soft as silk: the pistil is white, but the heads of the five stamens are yellow and curly. A closer look shows that one petal is transparent, and there are small ants collecting pollen inside.

Looking at the tall banana tree, I can't help but think of Yang Wanli's Ode to Banana in the Southern Song Dynasty: the bones are exquisite and transparent through eight windows, and the flower heads are inserted with purple lotus fragrance. There are countless Luo Qing fans around. If the wind doesn't come, they will cool themselves.

Explanatory article 9 on plants Read the following article and complete the question 12- 17.

(1) The fragrance of plants has many functions.

(2) The flowers of plants are fragrant and can be passed down to the next generation. In order to attract insects to pollinate, plant flowers not only present dazzling colors, but also emit charming flowers. So bees and butterflies are attracted to compete for honey, which is the so-called "bees compete for the fragrance of butterflies". As a result, pollen adheres to insects and settles everywhere with their flight and migration.

(3) There is a "factory" inside the fragrant flowers-oil cells, and the products in this "factory" are intoxicating aromatic oils. In addition to emitting fragrance and attracting insects to pollinate, the steam of this aromatic oil can also reduce the evaporation of water in petals and form a "protective coat" to protect plants from strong sunlight during the day and cold at night.

(4) The fragrance of plants' flowers is not only beneficial to their own growth and reproduction, but also beneficial to human beings. Aroma can stimulate people's respiratory center, thus promoting people to inhale oxygen and expel carbon dioxide. Because the brain has enough oxygen, it can keep people energetic for a long time. In addition, the fragrance information can stay deeply in people's memory, stimulate the sense of smell and enhance people's memory.

(5) The use of floral fragrance for health care and disease prevention has a long history in China. Hua Tuo, an ancient medical sage, made a small and exquisite sachet of cloves and hung it indoors to prevent and treat tuberculosis, vomiting and diarrhea. In ancient times, people put honeysuckle in pillows to relieve headaches and blood pressure. At the same time, it also has the function of diminishing inflammation and relieving cough.

(6) Different floral scents can cause different feelings. For example, the fragrance of osmanthus makes people very tired; The fragrance of chrysanthemum makes people think clearly. However, everything is in two. Some floral scents can also bring side effects to people. Such as lilies and orchids, can cause dizziness and instant dullness.

12. Add some words and phonetic notation.

Instantaneous replication

13. The content of this article is.

14. In paragraph (4), what two aspects does it say that the fragrance of flowers is "beneficial to human beings"? (No more than six words in each aspect)

Answer: ① ②

15. The underlined sentences in paragraph (4) play a role in the text.

16. Why can't the floral fragrance of plants be deleted?

A:

17. Paragraph (5) lists two examples. what is the purpose?