What are the methods of planting sweet potatoes? What is the variety of white-heart sweet potatoes?

Sweet potatoes are a very common food that can be baked or steamed. They are sweet and rich in dietary fiber. There are many varieties of sweet potatoes, such as red-heart sweet potatoes and white-heart sweet potatoes. So what kind of variety are white-heart sweet potatoes?

How to plant sweet potatoes

Sweet potatoes are generally propagated by cuttings, that is, using sweet potato vines to propagate. The main reason for not using seed potatoes is that the seed skin of sweet potatoes is relatively hard and thick, and it is not easy to absorb water and a small amount of nutrients, which will affect the normal germination of sweet potato seeds.

It is easy to grow roots by directly using sweet potato vines for cuttings, and the survival rate is also very high. The agricultural management required by growers is also simple and convenient, reducing the steps of watering and fertilizing.

Another thing is that sweet potatoes are cross-pollinated. After sweet potatoes bloom, cross-pollination may come from pollen from other crops, or pollen from other varieties of sweet potatoes. Such planting may change the original genes of sweet potatoes and cannot guarantee the characteristics of the original variety!

What is the variety of white sweet potato

The white-heart sweet potato variety is called glutinous rice sweet potato. There are two types of white-heart sweet potatoes according to their skin, one is the light yellow skin white heart sweet potato, and the other is the red skin white heart sweet potato.

The yellowish skin and white core are called Victory No. 100. The core is not pure white but slightly yellowish. The shape is round and natural, the taste is sweet and has no tendons. It is usually processed and eaten directly.

Red skin and white core, long and thin in shape. Features include high starch content and high flour yield. Dry taste, average sweetness. Also has a lot of gluten. Generally used to make sweet potato starch.

White-heart sweet potatoes contain more water and are not as sweet as red-heart sweet potatoes, but they have a higher cellulose content. Therefore, white-heart sweet potatoes are used to extract starch and then processed into sweet potato powder. It is best to use fermented organic fertilizer for planting white-heart sweet potatoes, and there is no special precaution.

White-heart sweet potatoes are suitable for growing in areas such as Hunan, Hubei, Shandong, Sichuan, etc.

Sweet potato growing conditions

temperature:

Sweet potatoes like warmth, are not cold-resistant, and are very sensitive to temperature. For example, when the ground temperature is 10 degrees, sweet potatoes cannot germinate, and the roots of sweet potatoes at 15 degrees. When the roots need 5 days, the roots of sweet potatoes at 17 to 18 degrees must grow normally. The roots of sweet potatoes at 20 degrees can germinate in 3 days. When the temperature is between 27 and -30 degrees, 1 day. Can germinate. At a temperature of 25 to -28 degrees, the stems and leaves of Honghu grow fastest, and more than 30 degrees is conducive to the growth of stems and leaves, but it will slow the expansion of sweet potato fruits. When the temperature is above 38 degrees, the stems and leaves of sweet potatoes will grow slowly, but will not die. When the temperature is 15 degrees, the growth of sweet potatoes will stop. At about 10 degrees, the stems and leaves of sweet potatoes will be frozen and die.

illumination:

Sweet potatoes have high requirements for light. When the light is good, the sweet potato leaves are thicker and the stems are thick and strong. When this happens, the yield of sweet potatoes is naturally high, but when the light is insufficient, it is a flat scene. For example, the leaves of sweet potatoes will turn dry yellow, the leaves will become more numerous, the stems will become thinner, and the transportation speed of nutrients to the sweet potatoes will slow down, and the natural yield will also decrease.

Moisture:

Sweet potatoes are more like dry weather. The reason for affecting the yield is that the sweet potatoes grow too much, so the water changes too much, which is not conducive to the growth of sweet potatoes. The sweet potato seedlings that have just come out need more water, but during the flowering period, the water supply needs to be reduced. If the water is too much, the time to open the sweet potatoes will be shortened, which will affect the yield of sweet potatoes. Therefore, you must pay attention to sweet potatoes when planting. Control the water.

fertilizer:

Sweet potatoes have high requirements for fertilizers, so the supply of fertilizers must be guaranteed during planting. It must have enough base fertilizer. (Sulfur, iron, magnesium, calcium, these four fertilizers are used less. Sweet potatoes mainly need potassium fertilizer the most, nitrogen fertilizer is less, and phosphorus fertilizer is also used less. Usually, 3.5 kg of nitrogen fertilizer, 1.75 kg of phosphorus fertilizer, and 5.6 kg of potassium fertilizer should be used for every 1,000 kg of sweet potatoes. Other fertilizers should be changed according to different land and sweet potatoes to determine the problems that arise during the planting process.

soil:

Sweet potatoes do not have very high requirements for land. As long as the pH value is between 4.5-8.5, they can be planted, especially planted in land with a pH value of 5.2-6.7, which will make the yield of sweet potatoes better. Therefore, we must pay attention when choosing land.