Sweet potatoes should be grown from mid-February to mid-April.

Spring potato breeding is mostly done before and after the Jingzhe. In areas south of the Huaihe River, breeding starts after mid-February. In areas north of the Huaihe River, breeding is started before April 10th. Breeding is mainly done in hotbeds or cold beds covered with plastic films. . Potatoes are usually rowed in the open field before April 20. The potato vine hibernation seedling cultivation method is to save the potato vines harvested in autumn until the second year to make sweet potato seedlings.

Pruning the vines: After the sweet potatoes are harvested in autumn, select strong potato vines that are frost-free and disease-free, remove the leaves, retain 1 cm of petioles, and cut them into sections every two sections.

Forced dormancy: Soak the cut potato vines in amphetamine solution with a concentration of 0 or 5% for two minutes, then remove and dry the surface moisture.

Sand screening: Filter the ordinary yellow sand through a sieve to remove large particles of sand and impurities, sprinkle with water, and keep the humidity to a level where the sand can be loosened after being pinched tightly.

Sand storage: First dig a pit on the ground, with no limit on length and width, and a depth of 1 or 2 meters (depending on the thickness of the frozen soil layer in winter in various places, the storage temperature should be 5~10℃) . Then lay the potato vines flat in the pit with one layer of vines and one layer of sand, leaving a 1 cm gap between the vines.

The thickness of each layer of sand should be no less than 3 centimeters, and the thickness of the previous layer should be no less than 15 centimeters. Cover the surface with a plastic film. In areas with heavy frost, cover the film with straw. When it is time for sweet potato planting in the following spring, just take out the cuttings from the potato vines.

The potato vine hibernating seedling raising method can save the space occupied by seed potato seedlings and field management during the seedling raising period. After the potato vines are taken out from the sand, a small number of new roots have grown. After cutting, they survive quickly and grow well. , can increase sweet potato yield per unit area by 15% to 20%.

1. Roasted sweet potatoes

Home-style roasted sweet potatoes:

Ingredients: sweet potatoes.

Method: Wash the sweet potatoes, drain the water, put a piece of tin foil in the baking pan, then put the sweet potatoes in the baking pan and preheat the oven to 220 degrees, bake in the middle layer for about 20 minutes. Open the oven, turn the sweet potatoes over, Bake for another 20 minutes until cooked through.

2. Steamed sweet potatoes

Ingredients: 2 sweet potatoes.

Method: Wash the sweet potatoes and put them in a steamer. Steam them for half an hour until they are done and put them on a plate.

3. Sweet potato and corn porridge

Ingredients: a few cabbage roots, a handful of corn flour, a sweet potato, an appropriate amount of wolfberry, and an appropriate amount of salt.

Method: Dice sweet potatoes and set aside, dice green vegetables and set aside, set aside a handful of corn flour, pour the corn flour into a bowl of cold boiling water and stir evenly, set aside, add an appropriate amount of water to the rice cooker. Bring to a boil, add the cut sweet potatoes. After the sweet potatoes are cooked, pour the prepared corn juice into the pot. After boiling, add the green vegetables, and finally add an appropriate amount of salt. After cooking, put it into a bowl. You can sprinkle a few Garnish with diced wolfberry.