Where is the birthplace of rice?

Rice originated in China, and then gradually spread all over the world. The history of rice cultivation can be traced back to about 12, ~ 16, years ago in Hunan, China. In 1993, the Sino-American joint archaeological team discovered the world's earliest ancient cultivated rice in Yuchanyan, Daoxian County, about 14,-18, years ago. After being widely planted in China, rice gradually spread westward to India and was introduced to southern Europe in the Middle Ages.

According to different methods, rice can be divided into indica rice and japonica rice, early rice and mid-late rice, glutinous rice and non-glutinous rice. Yuan Longping, a Chinese scientist, has made great contributions to the research of hybrid rice and is known as the "father of hybrid rice". The fruit of rice is rice, and rice (grain) is called rice, fragrant rice and rice after hulling. Nearly half of the world's population lives on rice. There are many ways to eat rice, such as rice, rice porridge, rice cake, rice cake and rice wine. Besides being edible, rice can also be used as industrial raw materials for wine making and sugar making, and rice husk and rice straw can be used as feed. The main rice producing areas in China are mainly Northeast China, Yangtze River Basin and Pearl River Basin. Belonging to direct cash crops. It is also the staple food of one third of mankind in the world.

How to write a composition about rice in my hometown

In my hometown-Hebei, everyone likes to eat coarse grains, so everyone looks twice as healthy and twice as strong. People often eat rice, wheat, corn, sorghum and so on. Among these coarse grains, corn is my favorite. In our hometown, some people call corn the "king of harvest" and a bunch of big corn. Some can be fed to chickens, and some sun-dried corn can be ground into powder, made into tortillas and corn porridge, or made into corn wine ... Corn is not only versatile, but also delicious! Just pick the corn, peel off the corn kernels, grind it into corn flour, put some yeast, and finally put it in a steamer. After steaming, you can eat it. The golden appearance is crisp and crisp, with a faint smell of corn, and it smells sweet. The taste of corn porridge is also very good. As long as Grandma serves corn tortillas at one end, I will run up first and put them in my mouth one by one. I haven't started eating yet. The fat content is four times higher than that of rice, and it is particularly resistant to hunger. Eating it will reduce blood fat and blood sugar for the elderly. Therefore, the elderly in our country are extremely healthy and live long. Sweet corn is rich in vitamins A and C, and some substances are beneficial to children's growth, so all the children in our country grow strong. Corn has raised generations of people in my hometown, and as one of them, I feel extremely proud and proud. I love the corn in my hometown

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A cool autumn wind blew, and the rice swayed with the wind, making waves like a golden ocean.

The rice rustles, as if welcoming Miss Qiu.

Walking on the green ridge, I saw that every ear of rice was full, like a golden necklace shining with golden light.

every grain of rice is bulging, like a mother who is about to give birth to a baby.

I continued to walk on the verdant ridge, and the heavy rice bent the rice straw, bowing and saluting me like a graceful gentleman.

many small grasshoppers jump around in front of me to welcome me.

The beautiful Hua Hudie is flying around beside me, like dancing for me.

when some birds heard something, they immediately flapped their wings and flew straight into the sky.

ah, the rice fields in autumn are really beautiful!

35 words without news in the composition of super rice

Recently, the scientific research team led by Academician Yuan Longping has made significant progress in the fourth phase of the hybrid rice research plan.

then, let me talk about super rice.

1. The yield of super rice has increased at a gratifying pace. The so-called "super rice" is rice that has significantly exceeded the existing varieties in terms of yield, quality and resistance to pests.

In 1996, Yuan Longping, the "father of hybrid rice", presided over the China Super Rice Plan.

In 2, super hybrid rice successfully achieved the first phase goal of 7 kilograms per mu; In 24, achieve the second phase goal of 8 kilograms per mu; In 211, it achieved the third phase goal of more than 9 kilograms per 1 mu.

on September 29th, 213, the yield per mu reached 988.1kg, setting a new world record, which is close to the fourth target of reaching 1,kg per mu in 215.

2. Although there is super rice, the national rice yield has not increased significantly. With the experiment of the scientific research team led by Grandpa Yuan Longping, the progress of super rice yield increase is gratifying.

it is reasonable to say that the national rice production should be significantly increased.

However, according to statistics, in 199, the national rice output reached 189.33 million tons, and then reached the peak of 2.73 million tons in 1997.

since then, during the implementation of the super rice plan, the national rice output has dropped significantly, and it was reduced to 16.65 million tons in 23, and then gradually picked up.

in 211, it returned to the level of 2 million tons.

By 212, the title of rice even the largest grain crop in China will be replaced by corn.

3. Super rice has no obvious advantages compared with conventional rice. The reason why this happens is not that super rice is not as good as it is said in the news.

it's not because super rice has not been popularized and known by farmers.

It is because, although super rice is an excellent seed, if there is no fertile field and good planting methods, it does not have much advantage compared with conventional rice.

According to records, a production survey based on 565 rice farmers in Hunan and Zhejiang provinces in 21 showed that super rice was superior to conventional rice in yield per mu and disease resistance, and slightly superior to conventional rice in net output value and net profit per mu.

However, because the planting cost of super rice is relatively high, its cost is high, but its profit rate is lower than that of conventional rice.

Although the cultivation of super rice can save pesticides, the investment in seeds, fertilizers and manpower is greater than that of conventional rice.

4. Economic benefits are more important than output. Many people may not understand this topic. Isn't it always said that there is a food crisis? Aren't some countries still starving? Doesn't the international community attach great importance to food? Then why is output not the most important? This is actually a common misunderstanding.

The so-called food crisis never means that the world's grain output is not enough for human needs.

In fact, in recent years, the world's grain reserves, supply and total consumption have remained stable.

The food crisis is because millions of poor people didn't come to buy food. In the final analysis, it is still a problem of distribution.

in modern agriculture, grain production, as a category within it, has become a commercial behavior.

the output is no longer considered, but the economic benefits it can bring.

The most popular truth is that "cheap grain hurts farmers". If you produce too much grain, you will not get more benefits, the price of rice will be reduced, and the accumulated grain that cannot be sold will be wasted.

The benefits of growing rice are not as good as those of going out to work. Because of this, fewer people are farmers.

And conventional rice has been able to meet the needs of farmers, so there is naturally no big market for super rice.

5. compared with super rice, how is the "super corn" in America? Compared with the super rice in China, how did the hybrid corn from the United States occupy the China market? By what? This hybrid corn named Xianyu 335 is not because of its high unit yield, but because of its excellent performance, and it has certain resistance to stem rot, smut, Curvularia leaf spot, big leaf spot, small leaf spot, dwarf mosaic disease and corn borer. The most important thing is that it has a unique advantage-the grain is dehydrated quickly and dried quickly after harvest, which solves the most headache for grain buyers in the past.

The key to the success of Xianyu 335 in China lies in its commercial breeding system and knowing what the market needs.

China's super rice is developed by researchers, who pay more attention to scientific research results and don't care whether it can bring market benefits.

6. My thoughts on super rice 1. I think that the future direction of super rice should not only focus on yield, but also pay more attention to performance, which is recognized by the international market.

as shown in argument 4, if there is high yield without economic benefits, the market cannot recognize super rice.

academician Yuan Longping put on the "yield halo" for hybrid rice at the beginning, which made the media and the public often only care about the yield, but they knew little about the quality and performance of super rice.

In fact, not many people know whether the rice they usually eat is super rice or conventional rice.

2. In my opinion, the overall quality of rice in China is still poor, which can't meet the needs of residents in large and medium-sized cities.

at present, there is a shortage of high-grade and high-quality rice varieties in rice production in China, especially in the south, which limits the establishment of high-quality rice brands.

In addition, the processing level of rice in China is generally low, with incomplete specifications, which can not meet the needs of marketization.

In recent years, compared with ten years ago, China's rice export is in a shrinking state, and it depends on a few countries.

compared with international brands such as Thai fragrant rice, its influence and price are far from each other.

3. In my opinion, it is no longer the 197s. People not only need to eat well, but also eat well. The highest output can no longer satisfy China people.

Super rice is truly successful when it no longer appears in the news as the output of experimental fields, but as a well-known brand, participates in international competition and appears on people's dining tables.

Write an essay on "Rice in the Field"

Harvesting rice "Harvesting rice! Harvest rice! " The rice farmers shouted in the rice fields.

so, we went to the fields to harvest rice.

The sun was shining, and just after lunch, I went to the fields with my grandparents.

the soil in the field is very hard.

golden ears of rice danced in the breeze.

I watched it and was completely intoxicated by this charming scenery.

"hurry up, hurry up!" I woke up and saw only what my grandparents were saying.

I leaned in and said, "What are you talking about? Can you tell me something? " "Of course, we are talking about how to cut.

"So, we soon discussed the harvesting method.

the rice cutting has started.

"Cha Cha", and in a short time, the two of them opened a certain distance from me.

I quickened my pace to catch up with them.

however, no matter how hard I try, it's useless.

I cut half a line, and they have already cut two lines.

I cut it for a while, and the sweat on my face dripped down, and sweat flowed into my eyes, which made me feel terrible.

my clothes are wet, too.

I was just about to straighten up and take a breath, but grandpa turned around and said, "Come on, Xiaohong! Stick to it! " I forgot to take a towel to wipe my sweat, so I lifted my dirty hands stained with mud and wiped them on my face.

then, I continued to cut rice.

I cut hard.

at this moment, I really hate myself for being so slow.

Look at how skilled grandparents are! By the time I cut one line, they had already cut four lines.

after a break, grandma looked at me and smiled, saying, "Look at you, you are a big cat!" " Grandma took out a towel and wiped the sweat and mud stains for me.

in the evening, we cut the rice and went home.

Today, I am very happy, because I have experienced a hard work and truly realized the value of hard work.

2 words of paddy field composition in autumn of grade two

It is beautiful all year round.

peach and willow green in spring; Dense foliage in summer; Autumn is a golden cluster; Winter is a white world.

but I like autumn best.

You see, the endless rice fields are golden, shining like gold in the sunlight.

The fields are all covered with golden ears of grain, and the heavy ears of grain are like a shy little sister with her head down.

A breeze blew, and the ears of grain in Huang Chengcheng rose and fell like rolling golden waves.

Miss Gao Liang's face is flushed. Aunt wheat also danced with the rhythm of the wind; The corn looked at the wheat and nodded and smiled ... The autumn world is full of laughter.

Farmers' uncles are coming to harvest rice! Farmers' uncles are coming to harvest rice! Autumn girl came, she brought the joy of harvest to the farmer's uncle; Grandfather Sun plated their faces and arms with a layer of golden yellow, and the farmer's uncle was happily harvesting the fruitful results brought by autumn.

The river beside the paddy field is also beautiful. Look, the clear river is as quiet as a mirror. Green to a piece of jasper, "alas!", the small fish in the river swayed its heavy body and suddenly jumped, and there were clear waves. Together with the colorful sunshine cast by the sun father-in-law, the river was sparkling. It was really beautiful! I love autumn.

5 words of rice field composition in summer

Summer is here, the sun shines on the earth, and the fields are full of vitality. Today, my mother took me to the countryside to enjoy the beautiful fields.

In the countryside, cicada under the tree sang like a singer: "cicada, cicada".

The cricket and the cricket in the field are also playing. They are playing hide-and-seek. When the cricket comes here, it goes to the other side. They are exhausted and very happy.

The forest in the hill is lush, with lively and lovely birds, fragrant flowers and tinkling streams ... The fields are thousands of miles long, with wheat in green clothes.

Soybean has a big belly, like a general.

Corn has a beard like an old man with a white beard.

Xiaoxi sings more happily than in spring. It is like a pianist. It plays for everyone. The sound is very pleasant and beautiful.

The small flowers are blooming more brightly, with a cluster here and a cluster there. They are as red as fire, as white as snow and as yellow as pears ... with different colors and colorful colors.

The scenery in summer is beautiful. I love the fields in summer.

Fairy Tale Composition in Autumn Paddy Field

Autumn has arrived, and the rice in the paddy field is mature, strong, round and chubby, which is a rice doll on the root of the rice mother. Since the rice was planted, the farmer's uncle has been fertilizing and weeding the rice, and the sunlight has made the rice mother wear green clothes, and the light rain and dew are like sweet water.