Why is the yield of corn high in the United States?

Why is the corn yield in the United States higher than that in China? There are several reasons for this:

1. Superior natural conditions.

The U.S. Corn Belt is located within 38°-43°N, 82°-102°W, and is less than 500 meters above sea level. The terrain is flat and the soil layer is deep, and it is a fertile chernozem, with an organic matter content of up to 3%-5%. The frost-free period of the U.S. corn belt is 160-180 days, and the total growth period of corn is greater than the average rain10 active accumulated temperature of 3300-4600, and there is 80-90 mm of uniform rainfall every month during the corn growth season.

In contrast, there are many corn-growing areas in China that belong to rain-fed agriculture, and drought and uneven rainfall will affect corn yield.

2. High degree of mechanization.

The United States is the earliest country in the world to develop mechanized operations, and it is also the country with the highest degree of modernization of corn production. As a result of increased land intensification, maize production has become highly mechanized. In addition, fertilizers and herbicides.

It has also promoted the specialization and regionalization of corn planting. At present, the degree of mechanization of corn in China is gradually improving, and corn is the only way to become intensive, specialized and large-scale in the future.

3. Wide application of disease-resistant varieties.

The cultivation and popularization of early-maturing, dwarf-stalked, dense-tolerant, and disease-resistant varieties is one of the reasons for the substantial increase in maize yield. High-quality corn varieties increase yields by 10%-20%.

4. Scientific and reasonable fertilization and crop rotation.

The United States attaches great importance to the development of new fertilizer varieties, mainly nitrogen, phosphorus and potassium compound fertilizers.

Contains trace elements.

compound fertilizers, high-concentration fertilizers and liquid fertilizers, etc. Another important reason is to maintain and fertilize the soil, and its specific measures are a reasonable crop rotation system and a large amount of straw returning to the field.

And pay attention to the active application of organic fertilizer and high-efficiency compound fertilizer. It is a long work to improve soil organic matter and cultivate soil fertility, and the black soil protection project in Northeast China is also a necessary and effective practice to improve soil organic matter.

5. Increase planting density.

The practice of planting a large number of maize proves that in order to obtain high yield of maize, it is necessary to have a reasonable population structure and the coordination of ontogeny in the population, that is, there is an appropriate density. Increasing planting density is one of the key measures for large areas of corn yield in the United States in recent years. At present, the average corn planting density in the United States is 90,000 plants per hectare, which is about 6,000 plants per acre.

And the northern regions of our country.

The planting density of corn is mostly 3000-4500 plants, and the yield will inevitably be limited. Some areas such as Xinjiang in China can also reach 5,500 plants per mu, but at the same time, higher requirements are also put forward for the planting and management of corn.

In summary, the difference in corn yield has been caused. In the future, we will plant densely planted varieties and strengthen production management.

Improving mechanized operations, implementing large-scale production, and improving soil organic matter are all beneficial practices for us to increase corn yields.

Mainly because of the large area of land, and also because of the temperature and climate, the growth rate of corn is particularly rapid, and people also like to eat, so there will be a high yield.

Because the United States uses hybrid technology in the cultivation of corn, the yield is greatly improved, and the environment and temperature where they are more suitable for the growth of corn, so the yield is higher.

I think it's probably because U.S. agriculture is highly mechanized, which has greatly increased productivity, so corn yields are high.

Because the topography of this place is relatively good, and the temperature difference between day and night is relatively large, it is very suitable for the growth and planting of corn, plus the soil of this place is also relatively fertile, and then the seeds of corn are also better.

Modified genes with high yields.

One husband is a pass, and ten thousand people are not open.

First, the water and soil are fertile. The climate is good, these are important basic conditions, plus the United States is very developed in science and technology, agricultural machinery is well-equipped, and chemical fertilizers and pesticides are fine. The seed industry technology is also very developed, which is inseparable from the strong support for agriculture.

Due to special reasons, the precipitation in the United States is reduced, the people are sick and unable to work, the temperature is high, and the disease and insect disasters are serious.

Because the high temperature weather in the United States is more frequent, it will lead to a personnel crisis or an agricultural crisis, and it will also make the economy very backward. In fact, it is because the Americans are too lazy to grow corn, which may lead to the decline of their food and agricultural industries, which will slowly lead Kiyoga to the collapse of the country. This year's U.S. corn harvest is at its lowest level in three years, mainly due to the extreme heat this year.

The United States has also been affected by high temperatures and dry weather. A heat wave hit and the corn harvest failed. This year's hot weather in the United States can be described as a rare hot and dry weather in at least a decade.

This unusual weather has also affected local agriculture. Another reason is that spring plantings in the United States this year were lower than expected, leaving a lot of land barren. The per capita arable land in the United States is about hectares.

Coupled with strong mechanized production, the average grain production in the United States is very high, and the land is enough to feed the American people. Positive As a result, a large number of U.S. food products are exported. <

Therefore, the United States attaches great importance to the protection of food products to avoid affecting food products due to large quantities of food production. As a result, the United States has actually been controlling its own food production in order to maximize the benefits of food production. This has to do with crop cultivation in the United States.

The United States is engaged in the cultivation of barley, sorghum, pasture and other crops, and the yield per unit area is far lower than that of corn, wheat, and rice, which are the three main pillars produced in China. The food issue has always been a hot topic of people's attention, and various localities have completed bumper harvest debates. <

It can be seen that the harvested area is generally relatively stable and is in a state of continuous development around the world. Because only on the premise of laying a good foundation can there be no food crisis. Although the floods were ferocious, farmers also had the experience of growing rice.

Only by harvesting grain can we protect our own interests and avoid serious injuries. Farmers understand that the search for crops is fundamentally different from other crops, and that early harvesting has the same effect as late harvesting.

The local grain production of the United States is also at a very high level in the world, and it is also a country with a high level of agricultural production in the world.

The United States is the world's largest agricultural exporter, so the U.S. grain production is very high.

At present, China is the world's first grain, and the overall grain area of the major importing countries is relatively stable, and it is also in the stage of continuous development.

Summary. U.S. corn has a comparative advantage.

The United States has a high degree of agriculture and has the technology to grow corn, so the nutritional value and quality of corn when it matures are higher than those of other countries.

U.S. corn also has the best advantage, so it is imported.

Why do we import a lot of American corn because our country's production is not enough? If the yield is not enough, why export corn?

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U.S. corn has a comparative advantage. The United States has a high degree of nuclear industry and technology to grow corn, so the nutritional value and quality of corn before and after maturity are higher than those in other countries. U.S. corn also has the best advantage, so it is imported.

My country exports corn in order to let our Chinese things go abroad.

The main reason 1: the U.S. strategy direct subsidy.

Main reason 2: The strategy of the United States is to control the pricing power and protect the price of the acquisition.

In addition, there are excellent varieties, so they have high yields, and there is very little labor input, and all of them are mechanized.

The U.S. strategy directly subsidizes. China's wheat and corn are 50% more expensive than those in the United States, so chickens, ducks, fish, pigs and so on eat grain.

are cheaper than us. Direct subsidies in the United States are divided into two steps, the first is low-interest loans, and the second is direct money. Through these two direct subsidies, the United States has made both U.S. agricultural products and non-staple foods that eat agricultural products.

It's cheap. China also has two ways of subsidizing, the first is the subsidy of agricultural machinery, and it is businessmen who own agricultural machinery, not necessarily these four methods make the United States much cheaper to live than China, and the entire governing goal of ** except.

In addition to increasing the people's income, we should also reduce the cost of food, clothing, housing and transportation for the people.

The varieties are excellent, so they are highly productive, and the labor input is very small, and all the work is mechanized.

Dear, hello, I am very happy to serve you, for you to find out that the world grows more than 100 million hectares of corn every year, with a total output of more than 1.1 billion tons, accounting for about 30%-35% of the world's total grain, the main distribution countries are the United States, China, Brazil, Argentina, the total output of these four countries accounts for about 68% of the world's total output, of which the United States accounts for about 31%, China accounts for about 23%, and the proportion of American corn varieties in the world is difficult to determine. Because there are institutions and companies all over the world that grow and develop corn varieties. However, as one of the world's largest corn producers, the United States has an important position and influence in the field of corn variety breeding. The USDA and its research institutes are constantly developing new corn varieties to increase yields and adapt to different climates and growing conditions.

In addition, a number of agricultural technology companies in the United States are also investing and innovating in the field of corn breeding, constantly introducing new varieties to meet market demand. Kiss, I hope it can help you.