1、 When is the best time to plant sweet potato

Sweet potato is best planted every spring. If you want to raise seedlings in early spring and harvest sweet potato in advance, you can raise seedlings in hotbed or plastic small arch shed. When the sweet potato seedlings grow two real leaves, they can be transplanted and planted

2、 How to plant sweet potato

Sweet potato likes to grow in sandy loam with deep soil layer and good drainage. During the growth and expansion of plant roots, appropriate nitrogen fertilizer and more phosphorus and potassium fertilizer are required. Pay attention not to apply excessive fertilizer, otherwise the soil is too fertile, which is easy to cause sweet potato stems and leaves to grow in vain, and its fleshy roots are not easy to expand. Generally, the soil can be turned 20-25cm deep before planting, and 5000 kg of stable manure and 25-50kg of compound fertilizer can be applied to each mu of land

Sweet potato seeds are relatively hard. In order to improve the germination rate of seeds, seeds can be soaked and germinated before sowing. The seeds can be soaked in clean water for 10-12h, and then placed in wet paper towels until most of the seeds are exposed. Usually, seeds are sown in the earth before and after the grain rain. 1-2 seeds are placed in each hole. The row spacing of each sweet potato is 50-60cm and the plant spacing is 35cm

After the sweet potato is planted, the seedlings should be interspersed and supplemented with the growth. After the sweet potato seedlings are full, the manure and water should be applied once. When the soil is slightly dry, the middle tillage, weeding and soil cultivation should be carried out. When the main vine of the sweet potato grows to 18-24 leaves, the heart should be picked. During the growth of the sweet potato, the side vine should be removed and only the main vine should be kept. Usually, the sweet potato can be harvested 5-6 months after sowing