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3 fifth-grade explanatory notes

Time: 2019-11-12 Recommended visit : Explanation


Sunday and I Dad Go to the market to buy vegetables. Dad bought a lot of celery. I heard that it is still a herb.

The stem of celery is long and the whole body is green. As long as the green stem is broken by hand, the crystal clear milk will naturally flow to the hand, drip onto the ground, and splash on the face, as if coveredThe drizzle was cold and light. Gently peeled off its green and bright skin, the naked meat inside seemed to be immersed in the ocean of water. If you touch it, you will feel comfortable and relaxed.

The leaves of celery can be different from the leaves of other vegetables. Its leaves are like the "foot" of a duck, and the feet are like oily, smooth and green, giving a fresh and cool feeling. Take a closer lookThe meridian of celery is clearly visible, like a colorful map.

In spring, eating it can quench thirst, and prevent colds, liver diseases and other diseases. Its stems and leaves can be eaten, which is cool and refreshing. When celery blooms in summer, many bees will fly around to collect pollen and butterflies.I will also come here to liven up and unfold the colorful wings.

Everyone can try celery! It is not only a good dish, but also an unexpected and strange effect!

2.Potato composition

Potato Solanumtuberosum is also known as potato, potato, yam egg, etc. It belongs to the family Solanaceae and is a perennial herb, but is cultivated annually or twice a year. The underground tubers are round, oval, oval, etc. with bud eyes;, Hairy; odd-pinnate compound leaves, umbrella house inflorescence terminal, flowers white, red or purple; seeds flat yellow, multi-purpose tuber breeding. Tubers are edible and are important food, vegetables are also used as food, because of its rich nutritionKnown as "underground apple", it is one of the world's five largest food crops five major food crops refer to rice, wheat, corn, sorghum, potato. It is widely cultivated as a food crop in many countries in Europe and the United States. This species is native to South America.The Andes of Peru and the coastal areas of Chile. It was introduced to Europe in the early 15th century and quickly spread to the rest of the world. It was introduced into our country around the middle of the 16th century.

Potato has low calories, 90 calories per 100 grams, and the same amount of rice or flour reaches 350 calories. It contains carbohydrates and easily assimilated into the blood, which can endure hunger without hurting the stomach.

Potato production is high and the adaptability to the environment is strong. The main potato producing areas in China are the southwest mountainous area, northwestern China, Inner Mongolia, and northeast China. Among them, the southwest mountainous area has the largest planting area, accounting for about 1/3 of the total areaHeilongjiang Province is the country's largest potato planting base.

When using tuber asexual reproduction, seed potatoes can sprout and grow at the soil temperature of 5 ~ 8 ℃, the optimal temperature is 15 ~ 20 ℃. The temperature suitable for plant stem and leaf growth and flowering is 16 ~ 22 ℃.The most suitable temperature for tuber formation at night is 10-13 ° C soil temperature 16-18 ° C, and the formation is slower than 20 ° C. The temperature of unearthed and seedlings will be frozen when the temperature drops to -2 ° C.

The flowering and tuber formation period is the period with the highest water demand during the whole growth period. In case of drought, irrigation of 15 to 20 tons per acre is the key technical measure to ensure high and stable potato production.

Potatoes generally absorb about 6.65 to 11.65 kg of nitrogen, 2.8 to 3.3 kg of phosphoric acid, and 9.3 to 15.3 kg of potassium oxide with a yield of 1330 to 1650 kg per mu. Although potatoes can adapt to a variety of soils, they are loose and rich in organic matterPH 5.5 ~ 6.0 black soil is the most ideal. The density should not be less than 4000 plants per acre.

3. I love banana composition

Do you know what my favorite fruit is? Banana! Its yellow body, white flesh, like crescent and sickle, I like it!

Bananas are crescent-shaped, slowly changing from primitive green to golden yellow. Unripe bananas are green, hard and astringent, and not tasty at all. When the bananas gradually mature and the flesh becomes soft, it is delicious.The skin of ripe bananas is yellow, and the skins of immature bananas are a bit green. As long as you bite that petal, peel off the skin of the banana, and taste it, you will feel a soft feeling, sweet, Slowly coming to your heart, making you eat more and more.

When I taste the bananas in my hands with interest, the first time I eat bananas appears. When I was a kid, one day at noon, my father bought back a bunch of big bananas. Like a thick oneThe palms of the palms are slightly separated and look chubby. A single banana is slightly tilted at both ends, like a curved boat and a sickle. I saw this and asked my father strangely, "What is this?"Dad said, "Child, this is a banana!" I looked at this crescent-like thing with curiosity, cut it carefully with a knife, cut it into three or four pieces, stared intently, I didn't know where to get my mouthWhen my father saw it, he came over and said to me, "Stupid child, bananas are not the way to eat. You should peel off the skin first, and then eat the flesh inside. See, that's it!" I saw my father pick up a banana and change it.The magic is ordinary, peeling off the skin three or two times, exposing the milky flesh, the flesh is soft, and it will be drained at the first sight. My dad bite off most of it. I was stunned, but learned from thisThe bananas.

Bananas are smooth and delicious, rich in nutrients, and contain a lot of vitamins. Both adults and children love to eat them. Bananas eat into my mouth and are sweet in my heart. That sweet feeling has always accompanied me. Until now, I stillOften immersed in memories of eating bananas.

I love bananas, I prefer the nature that gave birth to bananas.