Potatoes will soon become the fourth staple food in China. Why can't sweet potatoes be staple grains?

Potatoes are about to enter the staple grain, why not sweet potatoes? Let's first take a look at what are the three staple grains? They are wheat, rice and corn, the status of these three should be unshakable, everyone agrees. But as the fourth staple food, Tudou, there are a lot of doubts. In fact, this is understandable.

First of all, the older generation of people in our country very much recognize sweet potato as the fourth staple food.

This is mainly because many of the older generation in our country grew up eating sweet potatoes when they were young. My parents are over sixty this year, and they remember eating a lot of sweet potatoes when they were young. Sweet potatoes can also be ground into noodles to make noodles and so on. But why can't such a grain with a memory of a generation beat potatoes to enter the ranks of staple grains?

Nutrition is the key!

It can be said that sweet potatoes are not combat effective at all. the protein content in sweet potatoes is too little, in addition to water is starch, which simply can not meet the nutrition needs of people's daily life. But potatoes are much better. Potatoes have a full range of nutrients. In addition, some young women will choose to eat potatoes instead of sweet potatoes in the process of losing weight, which is also a realistic phenomenon that reflects the problem.

In addition to nutrition, we often see some Scandinavian natural scenery on TV and feel very beautiful. But the Nordic region is extremely cold, the grain production is extremely low, and their staple food is potatoes. And it can be said that a variety of potato practices are an eye-opener. Scandinavians take potatoes as staple foods instead of sweet potatoes, which shows that potatoes have advantages that sweet potatoes do not have.

One is the planting environment. In northern Europe, the temperature is extremely cold, but potatoes can grow, indicating that potatoes are very adaptable. This point of sweet potato is not available.

Second, the output of potatoes, if you want to become the main output, you must pass the clearance. The output of sweet potatoes per mu is about 2000 jin per mu, but the combat effectiveness of potatoes is simply full, and the output of potatoes can be twice as high as that of sweet potatoes.

The third is the storage of potatoes, which last longer than sweet potatoes. In the past, there was a sweet potato cellar in my hometown, which was specially used to store sweet potatoes, because sweet potatoes could not be stored. But potatoes can be stored for a long time.

The four potatoes are eaten in a variety of ways. It must be needless to say that everyone knows this. Finally, there is a wider range of suitable people for potatoes. On the other hand, sweet potatoes are easy to cause gastrointestinal discomfort because of their high sugar content and extensive use. All these are the reasons that restrict sweet potato from becoming a staple food. And, of course, the nutrition problems mentioned above.

Having said so much, it doesn't matter whether you become a staple food or not, as long as you like it.

The above comes from promoting agriculture through science.