Potatoes are going to enter the staple food, why not sweet potatoes? Let's look at three staple foods first. They are wheat, rice and corn, and their status should be unshakable. Everyone agrees. However, as the fourth staple food, potatoes have many voices of doubt. In fact, this is also understandable.

First of all, the older generation in China recognized sweet potato as the fourth staple food.

This is mainly because many older people in China grew up eating sweet potatoes when they were young. My parents are over 60 years old this year, and I still remember eating a lot of sweet potatoes when I was a child. Sweet potatoes can also be ground into noodles and made into noodles. But why can't such a grain with a generation's memory turn potatoes into staple food?

Nutrition is the key!

It can be said that sweet potatoes have no fighting power at all. The content of protein in sweet potato is too little, except for water, which is starch, which can't meet the nutrition people need in their daily life. But potatoes are much better, and the nutrients of potatoes are more complete. 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.

Besides nutrition, we often see some natural scenery in northern Europe on TV, which is very beautiful. Northern Europe is extremely cold and the grain output is extremely low. Their staple food is potatoes. And it can be said that all kinds of potato practices are eye-opening. Nordic people regard potatoes as their staple food 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 still grow, which shows that potatoes have strong adaptability. This sweet potato is out of stock.

Secondly, potato production must pass the test if it wants to become the main output. The yield of sweet potatoes is about 2000 Jin per mu, but the fighting capacity of potatoes is almost full, and the yield of potatoes can be twice that of sweet potatoes.

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

Fourth, there are more ways to eat potatoes. It goes without saying that everyone knows this. Finally, potatoes are suitable for a wider range of people. Sweet potato has high sugar content and large dosage, which is easy to cause gastrointestinal discomfort. These are the reasons that restrict sweet potato from becoming a staple food. Of course, there are the nutritional problems mentioned above.

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

The above comes from developing agriculture through science and technology.