How to grow sweet potatoes

Sweet potato is also called sweet potato, sweet potato can be porridge, its sweetness is great, eating more sweet potatoes is good for the skin. So how to grow sweet potatoes?

First, how to grow sweet potatoes

1. Raising seedlings

Choose the sunny, leeward soil layer of deep and fertile soil as the seedling bed, fine soil preparation. Potato species are generally flat cellar, the potato surface is slightly lower than the soil surface and consistent, in order to achieve uniform seedlings. After emergence, the two agricultural films should be opened in time to cool down on a sunny day, and the agricultural film must be covered at night to play a role in heat preservation. Uncover the film in time after the seedlings, watering and topdressing, mainly farm manure. And spray new high-fat film to prevent moisture evaporation, heat preservation and anti-freezing, and isolate diseases and insect pests. When the temperature is stable above 20 degrees Celsius, do not cover the film, remove the agricultural film.

2. Reasonable close planting and timely early planting

Lesser Fullness of Grain to the Summer Solstice is the best season for planting sweet potatoes. To plant sweet potato seedlings on a sunny day, water them first and then plant them. The planting density can reach more than 3000 to 3500 plants per mu according to the ridge width and reasonable close planting. Then spraying the new high-fat film can effectively prevent the aboveground water from evaporating, the seedling water from transpirating, isolating the diseases and insect pests, quickly adapting to the new environment and growing healthily.

3. Fertilizer and water management

Sweet potato is a potash-loving crop. In particular, large amounts of nitrogen fertilizer should not be applied indiscriminately, so as not to cause overgrowth of red rattan and affect yield and starch content. Note: fertilization must take time, preferably 15-20 days after planting. At the same time, spraying new high-fat membrane can prevent bacterial infection, improve the ability of resistance to natural disasters, improve the intensity of photosynthesis, and protect the growth of grain seedlings. During the period of potato block expansion, Di Guo Zhuang Diling was sprayed to thicken the nutrient transport vessel of underground fruit, improve the swelling vitality of ground fruit, smooth fruit surface, strong fruit shape, high quality and high yield.

4. Vine management

Sweet potato is a long vine crop, suitable fertilizer and water conditions, rattan can grow to 4-5 meters, if not controlled, it will seriously affect the yield. The specific methods are as follows: timely ploughing, weeding and soil cultivation, short-cutting method, and spraying Huawang No. 3 can transform plant vegetative growth into reproductive nutrition, inhibit the crazy growth of main shoots and promote flower bud differentiation. Note that do not cut off the whole red rattan, after each short cut, lift the vine, put in place, the vetch vine is not allowed to fully turn the vine, avoid disturbing the foliar coefficient, is conducive to photosynthesis and promote high yield.