Why do most humans eat food as a staple food?

In fact, from the perspective of China's 5,000-year history, there is also a process of evolution of crops in the north and south. During the Spring and Autumn Period and the Warring States Period, wheat was not the staple food of northerners. Wheat was introduced to China from the Western Regions, and its popularity was still after the Han Dynasty.

This evolution is not over yet. Corn production has increased dramatically in recent years, while sorghum and sweet potato cultivation are in decline. Even different rice and wheat varieties are facing fierce competition.

In the past 30 years, the dietary structure of Chinese has undergone profound changes in the past 5,000 years. This is explained in Professor Huang Zongzhi's "China's Hidden Agricultural Revolution". To put it simply, the proportion of plant foods has decreased, and the proportion of animal meat has increased.

This is the current change in the dietary structure of Chinese. Some of us already eat meat as a staple food, and most of us eat rice and pasta as a staple food. There is a very important reason why there is no large-scale meat-based food, which is the cost problem.

For people in different regions, it is the products of the surrounding environment that determine the proportion of food.

For example, the Australian Aborigines. Before the arrival of Europeans, the Aboriginal people of Australia lived by hunting kangaroos and other animals, and used wild plants, nuts, berries and other supplemental food. The reason for hunting kangaroos is that they eat meat mainly because of the abundance of kangaroos on this continent.

Another example is the Mongols, hunting and nomadism were the main economic forms of the Mongols in the early days and even now. This is determined by the grassland environment and products.

The food forms of different environments and regions are very different, some are mainly beef and mutton, some are mainly wheat, some are mainly rice, some are mainly corn and potatoes, and some are mainly fish, which is determined by the local environment and products.

First, let's talk about the necessities of human survival. Carbohydrates, lipids, proteins, minerals, vitamins, water, dietary fiber. The first three are known as the three major energy nutrients, or heat sources (so the corpse is cold Na = =!). , to maintain the basal metabolism of human beings, how can you have the spirit to play ball and bubble and hit the dota without eating. It's like gasoline is to a car.

Minerals make up bones, teeth, energy-base balance, intracellular and extracellular osmotic pressure, muscle excitement, and enzymes. Vitamins are also essential organic compounds for a healthy body! Although it can neither become muscular nor produce energy, its importance cannot be overstated, and the most famous event is the nightmare of 18th-century maritime history - scurvy.

This is just a deficiency of VC, what happens if there is a lack of other vitamins? deficiency of VA, night blindness; VD, rickets, hypocalcemia; VK coagulation disorders; VB1, beriberi; VB2, damage and inflammation of the mucous membranes of the lips, tongue, mouth, perineum, etc., referred to as reproductive syndrome; niacin, leprosy dermatosis; Folic acid, neural tube malformations. In short, it's very sinful to live.

Needless to say, the importance of water is not good, and it is not good for the whole person not to drink water for a day.

By the way, as the saying goes, "women are made of water", but! But!! The total water consumption is about 60% of body weight for adult males and 50% for adult females! It's really a tender man.

Dangdang! Finally, it's the turn of dietary fiber! In fact, who dares not to eat dietary fiber, if you don't eat it, just wait for constipation! You can also pick out gallstones and play with marbles! [Uh When a cigarette is over, dietary fiber can be withdrawn.]

You see, there are so many substances and elements on it, I want to live well to see the sun next year.

Humans can't be missing!

Food is essential to human life, because the country is people-oriented, and the people are food-oriented. Food security is an important strategic material related to the national economy and people's livelihood, and food security is closely related to social harmony, political stability and sustainable economic development. Improve the food emergency reserve system and ensure the grain market.

Minimizing food security risks during a state of emergency is the responsibility of the first and an important part of the food security system. Grain is an important strategic material related to the national economy, people's livelihood and national economic security, and is the most basic means of subsistence for the people. In recent years, the problem of food security has become increasingly prominent due to factors such as the adjustment of agricultural planting structure, the reduction of cultivated land and water resources, and the acceleration of urbanization.

As the saying goes, "food is the sky", which shows the importance of food to us. Human nutrition comes from three meals a day, and food is the material basis for human survival, so food is very important to human life.

Summary. In the next 15 years, or even longer, the regions around the world that need food will be precisely the regions with high population growth rates, low agricultural productivity, and fragile agriculture.

About the food supply. In discussing grain supply, we need to pay attention to the structure of grain consumption. In addition to directly satisfying human needs, food is also used for ecological energy and feed.

In recent decades, the proportion of ecological energy and feed in the grain consumption structure has not only remained high, but also increased. The OECD has a data on the structure of food use in 2018: 60% of the total global corn production of 100 million tons was used for feed, 15% for bioenergy, especially for soybeans, and the proportion of feed and bioenergy combined also reached 70%.

Even in wheat, rice, and even sugar, a considerable proportion is used for ecological energy and feed. The increasing shift to feed and energy and other industrial uses is putting constant pressure on the demand for both traditional and classic foods.

Why do large populations and food production require complex societies?

In the next 15 years, or even longer, the regions around the world that need food will be precisely the areas where the population growth rate is high, and the agricultural ligand productivity is low, and agriculture is fragile. About the food supply. In discussing grain supply, we need to pay attention to the structure of grain consumption.

In addition to directly satisfying human needs, food is also used for ecological energy and feed. In recent decades, the proportion of ecological energy and feed in the consumption structure of grain cultivation sheds has not only remained high and dismantled, but also increased. The OECD has a profile on the structure of food use in 2018:

Of the total global corn production of 100 million tons, 60% is used for feed, 15% is used for bioenergy, especially in soybeans, the proportion of feed and bioenergy combined, also reaches 70%. Even in wheat, rice, and even sugar, a considerable proportion is used for ecological energy and feed. The increasing shift to feed and energy and other industrial uses is putting constant pressure on the demand for both traditional and classic foods.

The issue of food security has always been an international issue. The world is an increasingly complex system of the imperial balance chain, which is intertwined with geopolitics, economic systems, industrial transfers, population increases, and ecological environment deterioration. In such a complex system, the issue of food security will be a long-term historical task.

Therefore, the international community needs to establish a long-term and stable cooperation mechanism to prevent a food crisis in one local area from triggering a global crisis.

In human society, the ancestor of growing food is Shennong, who invented and led people to grow food.

Before primitive humans planted, grain was actually the seed of wild plants. Primitive humans learned the foraging behavior of animals by mimicking to determine which types of plants were edible.

Among them, the seeds of wild plants are the preferred food of small birds, mainly finches. From the food of small birds, primitive humans selected plant species that are adaptable, easy to grow and suitable for themselves. Through a long period of cultivation, improved cultivation, and cultivation led to the current grain.

The earliest food crop cultivated by humans was wheat. Wheat is the product of the domestication of its wild ancestors by Neolithic humans and has been cultivated for more than 10,000 years. In vast areas of Central Asia, many remnants of objects have been excavated in prehistoric primitive settlements, including wild and cultivated wheat spikelets and grains, and the imprints of carbonized wheat grains, ears of wheat and wheat grains on hard mud.

Wheat, rice, corn, sweet potatoes and potatoes are the five staple foods in China.

Cereals, potatoes, legumes.

It is divided into raw grain and finished grain.

There are nearly 100 specific varieties.

Wheat: barley, wheat, oats, wheat, barley.

Rice. Millet (millet), millet seeds, millet seeds, millet seeds.

Corn, sorghum, buckwheat,

Oilseeds: peanuts, sesame, rapeseed.

Beans: red beans, mung beans, cowpeas, broad beans, soybeans, broad beans, peas, green beans, black beans and dozens of other potatoes: potatoes, sweet potatoes, white yams, etc.

Carbohydrates, which provide energy for humans.