There are several varieties of sweet potatoes

Sweet potatoes have always been everyone's favorite thing, especially in the cold winter. We often see people roasting sweet potatoes. The aroma of roasted sweet potatoes makes people drool from a distance, not to mention eating them. Sweet potatoes are also a food with high nutritional value. There are many types of sweet potatoes in daily life, but when planting them, you must choose the right variety. Some sweet potatoes can only be roasted.

How many varieties of sweet potatoes are there?

According to the color of the potato flesh, it can be divided into: red-heart sweet potato, white-heart sweet potato, yellow-heart sweet potato, purple-heart sweet potato, etc. These are collectively called colored sweet potatoes. Because colored sweet potatoes contain a variety of nutrients, they have developed rapidly in recent years.

According to the length of the vine, it can be divided into long-vine sweet potatoes and short-vine sweet potatoes. For example, "Xushu 32" is a new variety of sweet potato with ultra-short vines, high starch content and high-quality edible properties.

Sweet potatoes can also be divided into several types according to taste: glutinous and sweet (sweet and sticky), soft and sweet, and fruit-like.

According to different uses, sweet potatoes can be divided into the following categories: high-starch sweet potatoes, fresh edible sweet potatoes (mini sweet potatoes), pigmented sweet potatoes (such as purple sweet potatoes), fruit-type sweet potatoes, preserved fruit-type sweet potatoes, vegetable sweet potatoes, feed sweet potatoes, and medicinal sweet potatoes.

Sweet potato (English: sweet potato), scientific name: Ipomoea batatas (L.) Lam., is also known as yam, red taro, sweet potato, sweet potato, sweet taro, sweet potato (northern), red potato (many local dialects), thread potato, sweet potato, golden potato, sweet potato, red potato, pillow potato, sweet potato, white taro, fennel sweet potato, red-skinned sweet potato, yam (dialect), cute sweet potato [etc.

Sweet potato belongs to the order Tubulales, annual herb of the family Convolvulaceae, more than 2 meters long, lying flat on the ground and slanting upwards, with leaves usually broadly ovate, 4-13 cm long, 3-13 cm wide, corolla pink, white, lavender or purple, bell-shaped or funnel-shaped, 3-4 cm long, capsule ovate or oblate, with false septa, divided into 4 chambers, with underground tubers, the tubers are fusiform, and the outer skin is earthy yellow or purple-red.

Sweet potatoes are rich in protein, starch, pectin, cellulose, amino acids, vitamins and various minerals, and are known as "longevity food". The sugar content reaches 15%-20%. It has anti-cancer, heart protection, prevention of emphysema, diabetes, and weight loss effects. In the Ming Dynasty, Li Shizhen's "Compendium of Materia Medica" recorded that "sweet potatoes can replenish deficiency, strengthen the spleen and appetite, and strengthen kidney yin", and said that people in the sea live longer if they eat them. Traditional Chinese medicine regards sweet potatoes as a good medicine.

How to choose high-quality sweet potato varieties?

First of all, you must buy from a regular seller and buy approved sweet potato varieties. Such sweet potato varieties are at least guaranteed in quality. Do not buy sweet potato varieties with exaggerated publicity, such as the word "potato king". It is best not to buy this kind of sweet potato variety.

The second thing is to choose sweet potato varieties according to the local planting environment. Not all sweet potato varieties are suitable for local growing conditions. In addition, sweet potatoes like sandy loam. If the local soil conditions are not suitable for the growth habits of sweet potatoes, no matter how good the sweet potato variety is, it will be useless. In addition, it is necessary to choose the sweet potato variety reasonably according to the different ways of use and the maturity time of local sweet potatoes.

The third is to introduce species from reliable sources, and the area of ​​introduction should preferably be disease-free. In addition, when selecting seeds, do not blindly pursue the size of the tubers. Tubers that are too large will not only affect the taste, but will also be unpopular in the market during the sales process.

Finally, we need to consider the resistance of sweet potatoes. In addition to its outstanding taste, a good sweet potato variety must also have good resistance, which includes the sweet potato's resistance to diseases, waterlogging, drought, and adaptability to soil.