From the last time I went to the pitaya base, I always wanted to have pitaya trees in our family, but just three weeks ago, we actually had pitaya trees in our family, but we never found them.

That was three weeks ago. Grandpa went to a friend's house to play that day and found a tree at his friend's house that looked like a fairy stick. He asked what it was. His friend said it was a pitaya tree, which was tenacious, so he cut a branch from those pitaya trees and gave it to my grandfather. When grandpa brought it back, we didn't notice it, and then grandpa planted it in a small flowerpot on the roof that was less than the size of a palm. Grandpa didn't expect such a piece. Two weeks later, there was a heavy shower, and the pitaya tree really took root and sprouted. It grew almost two meters long, like a small spiny arm, hanging high on the bamboo pole of our house to dry clothes. Until yesterday when I was playing on the roof, I found a pitaya tree here. This pitaya tree is tender green, with four protruding edges and four sunken seams, and there are countless thorns on all sides. From a distance, I really thought it was a fairy tree.

From a few meters away, there are two small "bumps" on the pitaya tree, which stick to the branches of the pitaya tree. What is this? Take a closer look. Oh, it's just a little pitaya flower. Those two pitaya flowers are not as big as fists. Those petals that are not petals are light green and tightly embrace the pistil in the middle.

It rained heavily this morning. The sudden heavy rain hit the two buds hard. When I heard the rain, I immediately ran to the roof to look. I want to cover it with a raincoat, but the heavy rain has come. Looking at two flower buds in the rain, they stood indomitable in the rain, braving the cold wind ... The rain stopped and the two flower buds were still "standing" on the branches.

This is my pitaya tree.

2. Describe the interesting composition topic of pitaya tree

The appearance of pitaya is very attractive.

From a distance, pitaya is like a burning flame, and its sharp horns are like scales on a dragon. No wonder it has the name pitaya. Looking closely, pitaya looks like a princess in a red dress, and the green leaves are skirts flying on the skirts. She looks so noble and elegant.

If I were a prince, I would definitely invite her to my party and dance with her all night. The taste of pitaya is even more attractive.

I peeled off the princess's charming dress, and snow-white pulp appeared in front of me, like jelly the size of a baseball. I gathered around Jelly to smell it. A faint fragrance got into my nose and floated into my heart, making my mouth water.

3. Composition describing pitaya

There is a big terrace in our home, on which all kinds of plants and flowers are planted. My mother often takes me to the balcony to water the flowers. Today, I watered the fruits in order, but when I wanted to water the pitaya, my mother stopped me and said that I didn't need to water it. Pitaya can't be watered as much as cactus, otherwise the roots will rot. I was puzzled and worried that they would die, but after a few days, the bud had grown out and there was a flower bag at the top. One night, my mother took me and my father to the outcrop, and our eyes lit up.

White flowers appeared in a row of pitaya, and the size of each flower was 15CM. Mother picked up a bowl and shook it in each flower. After a while, half a bowl of pollen was missing. Then mother mixed the pollen and stuffed a little pollen into each flower core. Mom says it's called pollination. It's amazing. In a few days, the belly of the flower slowly bulges, and the pitaya soon matures. Red pitaya is beautiful and fun, and dozens of them are always alive.

In the evening, we cut the pitaya into pieces to eat, and the whole family took a bite, but somehow, after eating, the whole teeth and tongue turned red, because the pitaya variety planted in our family was different from the purple meat of other pitaya varieties, and we smiled at each other. As I ate, I thought that pitaya never bowed its head when it was windy. Pitaya still stood upright in the downpour, and its branches, like cactus, could be cut off for skin care and beauty.

We walked on the terrace, smelling the fragrance of pitaya flowers and slowly savoring the delicious pulp. In the growth process of pitaya, I realized a truth, that is, a person should be strong, have perseverance, be not afraid of difficulties, have strong beliefs like pitaya, and face it bravely.

Dad bought a ball of things like fire. I thought it was a strange vegetable before, but later I knew it was pitaya.

There is a black hole at the top of pitaya. The edges are covered with some leaves like banana peels. But these leaves are one to five times thicker than those of other fruits.

When you cut pitaya, the first thing you see is black particles like black sesame seeds and pulp like white sesame seeds. If it is covered like a seal, it sounds silent. When you take a bite, you will feel that the pulp at the edge is a little sweet, and the middle is sweeter.

Dad says it tastes better after freezing. So I froze the other half.

The next day, I took out the other half of pitaya. She looks like an ice cube. I put it on the table until it thaws. An hour later, I found that pitaya turned into ice cream and tasted like sesame cake. Ah, it's delicious

4. How to write the explanatory text about pitaya?

The secret of snails

On Sunday afternoon, it was very sultry. I walked into the yard and fiddled with my father's "baby flowers and plants". Suddenly, I saw a snail slowly climb up the leaf. "Snails are pests or beneficial insects? Why does it always leave a long line where it passes? Where are its nose and eyes? " A series of question marks came to mind.

I ran into the room and asked my father who was reading the newspaper. Father smiled and said, "since you want to know the secret of snails, why don't you experiment yourself?" Yes! Why didn't I think of that! So I decided to try it myself.

"Are snails pests or beneficial insects?" First of all, I tried to test turtles and snails with various foods. I first picked up cabbage leaves, steamed bread, small mosquitoes, and then caught several snails, numbered them separately and put them in front of these foods. Probably they were so hungry that they crawled to their favorite food, but each snail chose cabbage leaves and chewed them, but they couldn't smell other foods. Soon, the leaves of cabbage were eaten up. Now, I have come to a preliminary conclusion that snails are pests.

Then I conducted a second experiment to analyze why snails leave a long line when they crawl. I grabbed the snail high. When its head stuck out of its shell, I tried to grab its body, but before my hand touched the snail, its head retracted again. I think this snail is really a "coward"! I tried several times in a row, but I didn't succeed. I am really depressed. At this time, my father came over and said, "I was discouraged at the beginning and wanted to be a scientist when I grew up!" " "I was so' excited' by my father and excited again. Suddenly, an idea crossed my mind, "Yes, yes!" "I am dancing with joy. I carefully cracked the snail's shell with a sharp stone, pulled out the snail's body and touched its bottom with my hand. I only feel some sticky, faint little things. What is this? I found the answer after consulting books. It turns out that the little thing is its feet, and the sticky thing is snail excrement, which helps snails crawl.

Finally, I want to see where the eyes and nose of the snail are. I put a cabbage leaf in front of a snail, only to see that the snail touched it with a pair of longer tentacles, then touched it with another pair of shorter tentacles below, and then gulped it down. I think: probably one pair is eyes and the other is nose. But which pair are eyes and which pair are noses? I took another leaf and another cabbage leaf of the same size and put it in front of another snail. Because the difference is not very big, the snail's eyes are useless: I can tell which one is a cabbage leaf and which one is a leaf just by touching it with my small antenna. Now, I have discovered another secret: the big tentacle has the function of eyes, and the small tentacle has the function of nose.

Through this series of experiments, I really gained a lot: I not only discovered the secret of snails, but also understood a truth: if I want to make inventions when I grow up, I must cultivate the ability to find problems and learn to solve them from an early age.

5. Explain the text and introduce the writing of pitaya.

Pitaya, also known as red dragon fruit, belongs to the genus Tripterygium of cactus. Its fruit is oval, with a diameter of 10~ 12cm, red in appearance, with green round triangular protrusions, white pulp and black seeds. In addition to red skin and white meat, cactus fruit also has red skin and red meat and red skin and purple meat. Pitaya is native to the tropical forests of Mexico, the Caribbean and Central America. Pitaya has been widely planted in Taiwan Province Province for 178 years. At present, it has risen in Hainan, Guangxi, Guangdong, Fujian and other provinces in China, and there are also sporadic cultivation in Chaoshan area. Pitaya is one of the famous tropical and subtropical fruits, and the research on Pitaya has been paid more and more attention. English name is pitaya or pitaya.

The benefits of pitaya

Pitaya, also known as Dragon Ball, is rich in nutrition and unique in function, and has excellent effects on human health. It contains rare plant albumin and water-soluble beet pigment, rich vitamins and water-soluble dietary fiber. Albumin is a viscous colloidal substance, which has detoxification effect on heavy metal poisoning. Due to the lack of attention to the treatment and recycling of industrial wastewater and waste, various water resources have been seriously polluted by heavy metals. In addition to drinking water directly, human beings are easily poisoned if the content of heavy metals in food exceeds the standard. When albumin meets heavy metal ions in the human body, it will automatically combine with heavy metal ions and be excreted by the excretory system, thus playing the role of detoxification. So eating pitaya rich in albumin can avoid the absorption and poisoning of heavy metal ions. Albumin also has a protective effect on the stomach wall. Moreover, the albumin in the flowers, fruits and stems of pitaya is excellent and stable, and the polymerization of these albumin constitutes the main component of cactus mucus. In addition to rich albumin, there is a more special component-betanin. β -carotene is ubiquitous in Dianthus. Beet pigment is divided into beet pigment and betaflavin. The pigment in pitaya peel is betacyanin, and the pigment in red meat pulp is betacyanin. It has antioxidant, anti-free radical and anti-aging effects, and can also improve the prevention of brain cell degeneration and inhibit the occurrence of dementia. At the same time, pitaya also contains vitamin C for whitening skin and rich water-soluble dietary fiber, which has the functions of losing weight, lowering blood sugar, moistening intestines and preventing colorectal cancer. Pitaya combines the advantages of fruits, flowers and vegetables. It can not only be eaten as fruit, but also has high nutritional value. It tastes delicious and has become a new and excellent green health food. [

6. "Dragon Fruit" composition (about 500 words)

The real name is Qinglong fruit, Honglongguo. Native to tropical Central America. Pitaya is rich in nutrition and unique in function. It contains plant albumin and anthocyanins, and is rich in vitamins and water-soluble dietary fiber, which are rare in general plants. Pitaya is a triangular column plant of cactus, which is native to tropical desert areas of Central America such as Brazil and Mexico, and is a typical tropical plant. Pitaya is a plant introduced from Nanyang to Taiwan Province Province, and then improved and introduced from Taiwan Province Province to Hainan Province and Guangxi and Guangdong in the southern mainland. Pitaya is named after its fleshy scales resemble those of dragons. When her bright and huge flowers bloom, the fragrance is overflowing, and potted viewing makes people feel auspicious, so it is also called "auspicious fruit".

Pitaya is native to tropical rain forests in Central America, belonging to Ranunculus and Serpentis of cactus. It was introduced to Southeast Asian countries such as Viet Nam, Thailand and Taiwan Province Province of China by French and Dutch. Pitaya has a deep historical origin with religious culture. Pitaya is planted near the Mayan and Inca pyramids in America and next to Vietnamese temples in Asia. Whenever there are sacrifices and major religious activities, they will sacrifice pitaya as a sacred fruit on the altar. What is even more surprising is that pitaya has an indissoluble bond with loong culture in the United States and Asia. The ancient Incas sacrificed pitaya with totems engraved with dragon images. This totem and pitaya both mean dragon in Inca. Even today, indigenous Mexican men like to call themselves China boys, which may be influenced by the legend that their ancestors came to the United States from China.

From the analysis of modern scientific research, the measuring ruler and pitaya do have many beneficial ingredients for human beings, and there are more elements to promote health, beauty, disease prevention and physical fitness. Since the middle of last century, pitaya has been planted on a large scale in Asia and Latin America. At the beginning of this century, the planting area in Asia has advanced by leaps and bounds, and the corresponding scientific research has also developed rapidly around the world. We believe that measuring ruler and pitaya will bring more ideals and strength to mankind.

7. How to write the explanation of pitaya?

Pitaya, English, whose real name is Qinglong Fruit and Honglongguo.

Native to tropical Central America. Pitaya is rich in nutrition and unique in function. It contains plant albumin and anthocyanins, and is rich in vitamins and water-soluble dietary fiber, which are rare in general plants.

Pitaya is a triangular column plant of cactus, which is native to tropical desert areas of Central America such as Brazil and Mexico, and is a typical tropical plant. Pitaya is a plant introduced from Nanyang to Taiwan Province Province, and then improved and introduced from Taiwan Province Province to Hainan Province and Guangxi and Guangdong in the southern mainland.

Pitaya is named after its fleshy scales resemble those of dragons. When her bright and huge flowers bloom, the fragrance is overflowing, and potted viewing makes people feel auspicious, so it is also called "auspicious fruit".

Nutritional value 1. The content of anthocyanin in pitaya is high. Anthocyanin is an antioxidant with obvious effect, which has the functions of antioxidant pitaya flower, anti-free radical and anti-aging, and also has the functions of inhibiting brain cell degeneration and preventing dementia.

2. Pitaya is rich in plant albumin, which is not common in fruits and vegetables. This kind of active albumin will automatically combine with heavy metal ions in the human body and be excreted through the excretory system, thus playing the role of detoxification. In addition, albumin has protective effect on gastric wall.

3. Pitaya is rich in vitamin C, which can eliminate oxygen free radicals and have the effect of whitening skin. 4. Pitaya is a low-energy and high-fiber fruit, which is rich in water-soluble dietary fiber, so it has the effects of losing weight, lowering cholesterol, moistening intestines and preventing colorectal cancer.

5. The iron content of pitaya is higher than that of common fruit. Iron is an indispensable element for producing hemoglobin and other iron-containing substances, which plays an important role in human health.

6. Sesame in pitaya can promote gastrointestinal digestion. 7. The juice of the fruit and stem of pitaya showed positive effects on tumor growth, virus infection and immune response inhibition.

The function of pitaya in editing this paragraph is to detoxify and protect the stomach. It belongs to tropical and subtropical fruits, also known as fairy honey fruit and dragon fruit. It is a cactus plant, native to tropical Central America such as Brazil and Mexico. In Asia, it is mainly distributed in Taiwan Province Province, Viet Nam and Thailand.

According to different colors, it can be divided into three varieties: red skin and white meat, red skin and red meat and yellow skin and white meat. Vitamins: B 1, B2, B3, C Rich minerals: calcium, phosphorus, iron, potassium, sodium, magnesium, zinc and other nutrients: carotene, carbohydrates, crude fat, fructose, glucose, water-soluble dietary fiber, plant albumin, anthocyanin (the most abundant variety in red meat) and so on.

Suitable for diabetics to eat in small amount. Pitaya is a tropical fruit. It is best to buy now and eat now. At the low temperature of 5℃~9℃, the freshly picked pitaya can be stored for more than one month without extrusion or collision.

At the room temperature of 25℃~30℃, the shelf life can exceed 2 weeks. Edible efficacy Pitaya has a unique curative effect on cough and asthma, and also has many functions such as preventing constipation, preventing senile lesions and inhibiting tumors.

Tips Pitaya has few pests and diseases, and it can meet its normal nutritional growth and reproductive growth without using any pesticides and hormones. Therefore, pitaya is a kind of green fruit in consumption concept, a healthy and nutritious food, and has a certain curative effect.

Health care efficacy The unique mucus of the branches and flowers of pitaya contains a lot of nutrients and therapeutic substances because of its extremely low osmotic pressure, and its effect is remarkable. Pitaya has the functions of preventing constipation, promoting eye health care, increasing bone density, helping cell membrane formation, preventing anemia and neuritis, angular stomatitis, reducing cholesterol, whitening skin, preventing dark spots, relieving heavy metal poisoning, resisting free radicals, preventing senile diseases, losing weight and preventing colorectal cancer.

The latest research results show that the juice of pitaya and its branches has a positive effect on tumor growth, virus and immune response inhibition. It can be used for treating cough, hemoptysis and cervical lymph node tuberculosis.

Stem cures parotitis, hernia and carbuncle. As we know, dietary fiber is called the seventh nutrient element in human body, which has the functions of lowering plasma cholesterol, improving blood sugar production reaction, preventing constipation and colon cancer, controlling weight, reducing estrogen level, detoxification and so on.

8. Thanks for the 500-word explanation of the fifth grade pitaya tree.

I like to eat many kinds of fruits-apples: yellow bananas, red apples, purple grapes, orange oranges, pale yellow melons ... among all the fruits, I like apples best! There are several varieties of apples, including Redjade, Fuji, Guoguang and Marshal Huang, all with different colors. Most of them are red, yellow and light green with red stripes. There are also different shapes, such as round, round prism, egg shape and so on.

I especially like to eat Marshal Huang. My mother says this kind of apple is only available in autumn, and its shelf life is very short. In the north, this kind of apple can only be eaten in September and October. Its color is pale yellow, its shape is rectangular, and one end is angular, like a petal, which can be cut horizontally with a knife and can also see the flower shape, which is particularly beautiful; Take a bite, it's sweet, it melts in the mouth, it's slippery, it seems to melt in the mouth, and it's delicious.

Apples can be eaten directly, canned food, applesauce and apple salad are all very delicious. Apple is also called the fruit of memory.

"It contains trace element zinc, which is an indispensable element in protein, and protein is a nucleic acid closely related to memory. In addition, the fructose content in apples is the highest among fruits. "

Look, apples are so delicious, don't you want to eat them? .

9. Write a composition about pitaya

Some people like to eat red apples; Some people like to eat sour and sweet grapes; Others like to eat big green watermelons; But I like to eat nutritious pitaya.

Pitaya, also known as pitaya and red pitaya, is fragrant when its flowers are in full bloom, which makes people feel auspicious, so it is also called "auspicious fruit".

Pitaya is white inside, rich in vitamins and water-soluble dietary fiber. The outside is a pink triangle. It tastes like it's from My Sweetie. Very tender.

Every hundred grams of pitaya pulp contains nutrients. Mainly contains protein, dietary fiber, vitamin B2, vitamin B3 and vitamin C; Iron, phosphorus, magnesium and potassium, etc.

The flowers and branches of pitaya have unique mucus, which contains a lot of medicinal and therapeutic substances. She can promote eye care, help cell membrane formation, and prevent treatable diseases such as anemia and neuritis.

Pitaya is produced in Taiwan Province, Hainan, Guangxi, Guangdong, Fujian and other provinces. The planting area of pitaya is still very limited.

Pitaya is delicious and nutritious, and it is also very helpful to the body. Therefore, I like pitaya best.

10. Pitaya model essay

1. Overview Pitaya is a perennial vine of Cactus Fenugreek, which is a new type of fruit with good health care function.

Native to the tropical rain forest area of Central America near the equator in the western hemisphere. This determines its biological characteristics: 1. Heat resistance and low temperature resistance.

It can withstand 40-50℃, but there will be different degrees of cold damage below 8℃, and it will freeze to death below 0℃ It doesn't come from dry and hot desert, but from tropical rain forest, so "nature" doesn't like drought but likes humidity.

Its roots are not resistant to water immersion, not to water, but to hypoxia. Therefore, it is decided that its cultivation characteristics should be shallow planting rather than deep planting, which is convenient for drainage. It is best to leave a loose, breathable and moist cover on the surface, such as litter or growing weeds, to imitate the growth conditions of their ancestors, so that aerial roots can meander and stretch near the surface to absorb water and fertilizer.

Many readers are not familiar with pitaya, but they are familiar with sword flowers. In fact, they belong to the same family and plant, and the triangular column of the stem is very similar to the size and shape of the flower, except that the sword flower only blooms without fruit (self-pollination), and its flowers and dried products are used as food; Pitaya can pollinate itself and produce round or oblong red-skinned fruit.

The pulp is soft, smooth and sweet, and the seeds are scattered in the pulpy (peptone-like) pulp like fine sesame seeds, which does not affect the taste and taste at all. The flowers of pitaya are insect-borne flowers. Like all cactus plants, they bloom at night until the next morning.

At night, before the sun goes down, it is slightly open, and bees can get in to collect powder and pollinate, and they can come back to collect powder and pollinate the next morning. At noon, the corolla gradually becomes soft and drooping. 2. Varieties are divided into red, white and Huang San subspecies according to pulp color, among which red pitaya has the most varieties.

According to the data, as early as17th century, the Dutch introduced pitaya to Taiwan Province Province, but it is a self-flowering variety, which was later spread to the wild and was called "Fan Hua" in Taiwan Province Province. Whether this kind of flower is the same as the one called sword flower in Guangdong is really interesting and worth discussing.

Later, the French introduced a variety of self-compatible pitaya to Vietnam, and gradually cultivated and spread it artificially. Guangdong Gaoming Jinkuizi Technology Co., Ltd. introduced three varieties a few years ago, two of which are red meat varieties, one with rosy skin and deep purple flesh, sweet and delicious, self-flowering and fruiting, and slightly round fruit shape; The other vine is stout, gray-green, with wax powder, fast growing, early flowering and more. It is said to be a Mexican variety, but unfortunately it cannot pollinate itself. For example, there are not many pollinators such as bees, and it is too inconvenient to pollinate at night, so this variety is not promoted.

However, if pollination can be effective, many fruits will be produced, with very high yield, cloudy fruit shape and dark pulp color. Third, white meat varieties, with high self-flowering rate, oblong fruit, long upper sepals, beautiful fruit shape, and lighter skin color than red pitaya with rose skin.

The above three varieties are different in the shape of stems and vines, the location of short thorns on stems, the shape of buds and flowers, etc., which can be distinguished by careful observation. May-June 165438+ 10, which has sprouted, blossomed, borne fruit and matured in batches. It takes 30-40 days in different seasons from bud to flowering and from flowering to fruit ripening. The three generations of fruit, bud and flower are "five generations under one roof", and the supply period of fresh fruit is more than half a year.

The name of pitaya varies from place to place and with the color of meat. Red meat subspecies are called red dragon fruit, white meat subspecies are called Yulong fruit, and yellow meat subspecies are called Huanglong fruit.

However, some scholars in Taiwan Province Province believe that westerners don't like the name "dragon", so changing the dragon fruit into dragon fruit is more conducive to exporting to European and American countries. "Fairy" means cactus family, and "honey" is a commendatory term rather than as sweet as honey.

The sugar content (soluble solids) of red and white pitaya is mostly between 10 ~ 15%, and its sugar content is mainly glucose (about 73.5%), which is easily absorbed by human body and has a low sweetness. Fructose with higher sweetness than sucrose accounts for about 26.5%. Because of its high water content (83-84%), the pulp entrance gives people a sweet and smooth feeling.

What varieties should be planted in the orchard? Be sure to plant more than two varieties. Red dragon fruit with purple flesh can bear fruit by self-pollination, but the fruit setting rate is not high enough.

If white meat seeds are pollinated, it is proved that not only the seed setting rate is high, but also the fruit is increased. Therefore, it is best to alternate red and white meat species, 2: 1 or 3: 1 configuration. Mainly red meat (because its natural red pigment has many uses), supplemented by white meat.

Thirdly, the planting method and the creeping characteristics of the bracket of pitaya must be set to be conducive to growth, flowering and fruit management. Support should be firm, able to resist heavy pressure and wind; Resistant to soil corrosion; Also consider the cost.

According to practice, there are three kinds of brackets to choose from. 1, reinforced concrete columns are independently supported.

Square reinforced concrete column, 2 m long, with a thickness of112 cm square, 0.5 m buried and 1.5 m above ground. There are 6-7 cm steel bars protruding from the top, so as to weld a steel bar cross disc with the column as the center and a diameter of about 0.7 meters.

The row spacing is 3 m (row spacing) *2- 2.5 m (plant spacing), which is about11-89 columns/mu. There are all kinds of 1 seedlings on both sides of the column. The stems climb to the top along the column through aerial rooting and artificial binding, and then spread around the hoop, and only the drooping branches are easy to sprout and bloom.

An old tire cover can be added to the iron ring to avoid overheating or easy to break. Cement column has good strength, independent ventilation and light transmission, but it must be buried firmly, and drooping stems and vines (artificial assistance) are evenly distributed around it to avoid tilting.

2. Rectangular row supports for galvanized iron pipes. According to the row spacing of 3 m, rows of stakes should be placed. The principle of pile thickness, firmness and corrosion resistance should be to maintain the climbing growth of pitaya for at least one year.

Column spacing 1 m, height 1.2-1.4 m, and two fruit seedlings are planted next to it. After planting, a durable galvanized iron pipe (water pipe) bracket is planned, and a pipe with an outer diameter of 2.5 cm is used.

Set a scaffold at 0.5 m on both sides with the wooden stake as the center, that is, the scaffold width is 1 m, and you can use pipes or 7-8 cm square cement columns (with steel bars inside), which will be more durable.

Buried depth should be firm, and buried pipe should have concrete pier foundation. The height of the above-ground part is still 1.5 m, and the spacing between scaffolding feet is 2 -2.5 m (depending on the strength of the pipeline and the vigorous growth of plants), and the pipeline is welded horizontally and vertically between the feet.

Within a year of colonization,