The grain in the south is harvested three times a year, why is the yield not as good as the one in t

In recent years, the development of Northeast China has been somewhat slow compared with other regions, and the economic growth rate has been slow, and the development has stagnated. Compared with the glorious times in the early years, the development of the Northeast today is very lonely. We all know that many cities in the Northeast are heavy industries.

mainly in the Internet and electronic information industries.

Today, the development of the northeast region.

It is still difficult to carry out industrial transformation and upgrading.

In addition to development, the northeast region is backward compared with before, and its land and grain output have also declined seriously compared with before. As we all know, the reason why the Northeast has been the granary of our country for many years is because the Northeast has "black soil, which is not available in other regions", and the "black soil" is the giant panda in the land, which is very rare. Black soil is a unique treasure given by nature to human beings, and it is a kind of soil with good traits and high fertility, which is very suitable for plant growth.

There are only four large black soil areas in the world, and the northeast of our country accounts for one of them, and the grain grown on the black soil is not only high in nutritional value, but also rich in yield, in the early years of Heilongjiang region.

The black soil is very fertile, and the grain output has always ranked first in China, and Heilongjiang has taken away the honorary title of "China's largest grain production province" from Henan in 2011.

After that, the "Chinese rice bowl" was completely used by the three northeastern provinces.

It's steady. <>

Even if the grain in the south is harvested three times a year, it is not as good as the one in the northeast, because the northeast has the advantage of black soil. However, with the large-scale development and reclamation of black soil, which has caused serious soil erosion, the black soil in Northeast China has gradually disappeared, leaving only Siping City in Jilin Province.

There was a small amount of black soil in Lishu County. The people here have always believed that "guarding the black land does not worry about food".

It is true that the yield of black soil is very high, but behind the high yield, it is the long-term "overdraft" of black soil, and the black soil layer has become thinner. Today, the scarce black soil in Northeast China, the "giant panda" in the cultivated land, has also been effectively protected to prevent soil erosion and cause degradation of the black soil.

Because the Northeast region has much larger fields for growing crops than in the South, the yield of crops is very high.

Although the south has three crops a year, the yield is low, while the weather in the northeast is more suitable for grain growth, and the yield is naturally much higher than that in the south.

The area is not as large as that of the Northeast. Because in the south, its grain area may not be as large as that of the northeast.

Although the grain in the Northeast only matures once a year. But there are relatively few people and more people. Therefore, it can become our country's grain reserve base, and the climate in the northeast region is also convenient for grain storage.

And in other places, although he matures several times a year, but. There is less land and more people, and due to geographical restrictions, food is not so convenient to store. So it is basically unlikely to become the granary of our country.

Although the grain in the Northeast only matures once a year. But there are relatively few people and more people. Therefore, it can become our country's grain reserve base, and the climate in the northeast region is also convenient for grain storage.

And in other places, although he matures several times a year, but. There is less land and more people, and due to geographical restrictions, food is not so convenient to store. So it is basically unlikely to become the granary of our country.

Hello, the Northeast where it is ripe once a year, although the grain crops are only harvested once a year, but because of the ability to arrive. Vast but sparsely populated. Per capita.

There are many more beams with land. If you sow more, you will reap more. In some southern areas, he naturally loses a few pounds a year, but because his plots are relatively small, they may only be one acre or a few points.

A few seasons a year can't reach the Northeast. The harvest is one season a year, so the Northeast is also called Kitakura. It is an important grain reserve base.

The black soil of the northeast, the great granary of the motherland. One is that the land is fertile and the population is not as dense as in the south. Coupled with the strength of science and technology, grain output has cooled down and increased significantly.

The south is densely populated, industrially developed, and has relatively few land resources, so although it is more than a year old, it is good to be self-sufficient in grain production. Therefore, the Northeast region can become the big granary of our country.

The land grain in the Northeast is relatively high and stable, the conditions for grain reserves are relatively good, and the climate is also suitable, so it is the base of China's grain reserves, and other areas that are more than a year old can also become granaries, such as the middle and lower reaches of the Yangtze River, the grain output is high, the quality is very good, and if the reserve facilities are perfect, it can become a grain reserve base.

The land in the Northeast is fertile, the land is vast and sparsely populated, and the grain yield is high, but it is closely related to the climatic conditions and the area of paddy fields, the Northeast is the largest and best granary in China is determined by two factors, although the Northeast is a year to crop, but the Sanjiang Plain in the Northeast has a very large area and extremely high yield, and the climatic conditions in the Northeast are very favorable for storing grain, so it is most advantageous to choose the Northeast as the granary of our country. In other places, although there are two crops a year or even more cropping, the planting area is far less concentrated and larger than that in the northeast, and more importantly, the climatic conditions are not suitable for grain preservation. In other areas where there are more people and less land, the demand for grain is large, and the output is not expensive.

Other places should not be able to be used as reserve grain, because although the grain in the northeast is said to be ripe once a year, it is relatively high in nutritional value, which can well supplement the food and the nutrition of our human body. The other ones that are more than a year ripe, although the amount is relatively large, but relatively speaking, the first is not delicious, and the second is relatively low in nutrients. The land in the Northeast is fertile, the land is vast and sparsely populated, and the grain yield is high, but it is closely related to the climatic conditions and the area of paddy fields, the Northeast is the largest and best granary in China is determined by two factors, although the Northeast is a year to crop, but the Sanjiang Plain in the Northeast has a very large area and extremely high yield, and the climatic conditions in the Northeast are very favorable for storing grain, so it is most advantageous to choose the Northeast as the granary of our country.

In other places, although there are two crops a year or even more cropping, the planting area is far less concentrated and larger than that in the northeast, and more importantly, the climatic conditions are not suitable for grain preservation. In other areas where there are more people and less land, the demand for grain is large, and the output is not expensive. Other places should not be able to be used as reserve grain, because although the grain in the northeast is said to be ripe once a year, it is relatively high in nutritional value, which can well supplement the food and the nutrition of our human body.

The other ones that are more than a year ripe, although the amount is relatively large, but relatively speaking, the first is not delicious, and the second is relatively low in nutrients.

The reason why Northeast China has become China's grain reserve base is because the weather in Northeast China is relatively dry, which is conducive to storing grain and is not easy to deteriorate. And the grain quality in the Northeast is relatively good, whether it is soybeans, corn, or wheat. The taste of the multi-channel in the south is far from good, and it is not suitable for making rations for storage and consumption.

Moreover, the climate in the south is relatively humid, which is easy to make grain moldy and spoiled. So the south is not conducive to being called a granary.

Thank you. The black soil of Northeast China is a very fertile large plain, and the grain production is high, so the three eastern provinces have become a reserve grain base.

The Hexi Corridor in the northwest region is also fertile land and an area with relatively good grain production. In addition, there are also large reserves of rice in the Jiangnan area, and there are also many large granaries.

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With the continuous progress of agricultural development, the level of agricultural production in various parts of our country has also been continuously improved, in the process of continuous development of agriculture, the main granary area of our country continues to develop and change, the earliest people heard from the saying is "Suhu is ripe, the world is full", this is due to the rapid development of agriculture in Jiangsu and Zhejiang during the Southern Song Dynasty, so it formed an important grain base at that time. Later, in the middle and late Ming Dynasty, due to the adjustment of grain and cash crop planting in Jiangsu and Zhejiang, the main grain planting base was transferred to the Huguang area, so it was called "Huguang is ripe in the world" at that time.

The Northeast region includes Heilongjiang Province, Jilin Province, Liaoning Province and the Northeast Four Leagues region of the Inner Mongolia Autonomous Region. Heilongjiang Province is the largest province in our country in terms of grain production. Jilin Province ranked 6th in grain production and Liaoning Province ranked 13th in grain production.

Inner Mongolia ranks 9th in terms of grain production. The total population of the Northeast region is only 100 million people, considering that the population loss in the Northeast region has been serious in recent years, the permanent population of the Northeast region is less, and the total population of the Northeast is not much different from that of Guangdong Province, Shandong Province and Henan Province.

In addition to Liaoning Province in Northeast China, the other two provinces are dominated by black soil, fertile soil, and high unit grain output, and more importantly, Northeast China is a heavy industry base, with a strong supply of agricultural production materials and a high degree of mechanization.

Because the land in the Northeast is dominated by black soil, the soil is fertile, the yield of grain per mu is high, the Northeast is a heavy industry base, the supply of agricultural production materials is strong, the degree of mechanization is very high, from the beginning of sowing, until the sale of grain, it is basically a large machinery, and the population is small and the consumption is small, and the temperature is low and convenient for grain storage. Other areas that are more than a year old can also be granaries as long as the quality and yield are guaranteed.

No, because the northeast region is vast and sparsely populated, the land is fertile, even if it is a year to produce a lot of grain, and the southern multi-year zone on the one hand planting land area is small, can not form a scale of grain production, at the same time, the young generation in the south is rarely still relying on farming to find, most of the planting are elderly, and because the plot area is too small to achieve large-scale mechanical planting, so it is difficult to become a granary.

Because there are few people in the Northeast, the land is fertile, wide and wide is suitable for mechanical planting, although it is ripe once a year, but he has a high yield, and the climate is dry and suitable for storage, so Dongkong is the base of China's grain preparation, and other areas that are more than a year can also become granaries, such as the Sichuan Basin, Hunan, Hubei, etc., but it is a little smaller than the Northeast.

Hard. Although Tohoku crops once a year, it is a vast plain area that is suitable for cultivation and has a long history of development. Others are more than a year of cropping, but the cultivated area is small, and it is difficult to mechanize on a large scale and promote agricultural production on a large scale.

Natural production is difficult to bear the requirements of a granary. In addition, the economy of the south is developed, and the relatively good land has been occupied and developed by industrialization, which has also reduced a large amount of land, degraded the grain production capacity, and the dependence of grain on foreign countries has become high, and it has not become a granary.

They can also become granaries, because each place is different, especially their geographical environment, the Northeast can become a granary, because they have a lot of land. Their land is very fertile and relatively extensive, so more food can be grown and more harvest can be harvested on such a piece of land.

The population in the Northeast is relatively sparse, and most of the plains, fertile soil, summer monsoon climate provides the best planting opportunities for it, plus the mineral resources here, it is also relatively rich, so the Great Northern Wilderness can become the Great Northern Warehouse in a short period of time.

The reason why the northeast is China's grain reserve base is that most areas in the northeast are vast and sparsely populated, and the per capita cultivated land area is very large, so that the people of the northeast still have a large amount of surplus grain and export transportation in addition to being self-sufficient. Coupled with the application and improvement of modern technology and management system, the production efficiency of Northeast China has been greatly improved. The Northeast region is located in the plain area, and then the black soil is dominant, so that the soil is very fertile, and because of the colder climate, there are fewer pests and diseases, so that the yield of crops is very high.

The advantage of cultivated land based on plains makes it possible to make full use of agricultural machinery to improve efficiency, and the gradual development of transportation makes it possible to continuously transport grain out of the country and realize the transfer of grain from the north to the south.

There are many plains in the northeast of our country, the soil is fertile, the land is large and the population is small, suitable for machine planting corn, soybeans, wheat, rice and other cash crops, due to a year of cropping, long sunshine time, most of the crops have increased production and income year after year and high quality, the northeast weather is suitable for storing grain, so it has become China's grain reserve base, become a granary. In other areas where there is more than one year of cropping, there are many people and little arable land, and there is little left except for self-sufficiency. And it is not suitable for large-scale machine farming, and the reserve conditions are not as good as those in the Northeast.

It is not suitable to become a base for China's grain reserves.

Analysis: The ripening of crops is closely related to the local temperature and the growth period of crops in northern China There are two crops in one year or three crops in two years and one crop in a year, and the crop ripening system in the Nanqing Yunfang area is two to three crops a year The crop ripening system is closely related to the local climate and temperature and the growth period of crops The main reason why crops in southern China can be doubled or triple harvested in a year is that the growth period is good throughout the year and the hydrothermal conditions are good According to the topic, it is selected: d Comments:

The ripening of crops is greatly affected by natural conditions, especially temperature and precipitation