When is it good to grow sweet potatoes in rural areas? How to manage?

Minnan is more casual about planting sweet potatoes. Generally, early-maturing potatoes can be planted in spring ploughing and washed in Xia Geng harrowing stage. After the summer harvest, sweet potatoes can be planted in June. Sweet potatoes in the past season were all stored as staple food after the Spring Festival. Some people plant potatoes in winter after harvesting peanuts, or harvest well when the temperature is not too cold. The management method of sweet potato is relatively extensive, and it can be planted at intervals after the base fertilizer is turned into a embankment. It is time-consuming and uneconomical to turn over the vines before turning over the embankment and then restore the fertilizer.

China is a vast area. The average temperature in the north and south of the country is very different, and the planting time is also different. Sweet potato seedlings are afraid of cold and the temperature is too low. Outdoor planting is very prone to chilling injury, resulting in low survival rate. Try to plant sweet potato seedlings when the local average temperature is stable to 15℃. Our hometown is located in the west of Henan Province. The duration of sweet potato seedlings every year is after the solar term. The duration of planting spring sweet potato is around Grain Rain, and around mid-April, the temperature tends to be stable around Grain Rain, so it is not easy to have low temperature weather.

Sweet potato is a green plant in Xiyang, and sufficient sunshine is beneficial to photosynthesis, so the total yield of tuber will be high, so the Peng Da minimum temperature of sweet potato tuber should not be lower than 16℃ at 22-23℃, so it is most suitable to plant spring sweet potato after the temperature is stabilized at 15℃ in mid-April. Summer sweet potato is also called wheat sweet potato. They are planted after harvesting and ridging spring wheat in June every year. Spring and summer sweet potatoes are planted in the north of Huanghuai.

After planting sweet potato for one month, a large amount of liquid fertilizer should be used to accelerate the growth and development of leaves and stems, and organic fertilizer and 5 ~ 10 kg urea solution should be added. At the same time, loosen the soil once, turn over the soil and tamp it, and pull up the grass after closing the ridge. Immediately remove the top and lift the vines. After the main stems and leaves of local melons grow to more than 50 cm, they should be topped as soon as possible to avoid long stems and vines and consume nutrients; In rainy season, stems and vines are very easy to grow and develop adventitious roots, which disperse the nutrients of leaves and stems. Lifting vines can inhibit the growth and development of adventitious roots of stems and vines, and concentrate nutrients for rhizome development.