High-yield cultivation method of purple-cloud red-core sweet potatoes

The invention relates to a high-yield cultivation method of purple-cloud red-core sweet potatoes. The cultivation method mainly comprises the steps of planting land selection, planting furrow making,sweet potato seedling planting, field management and harvesting. By the adoption of the cultivation method, planting ditches are formed in the planting furrows, the potato vines are used as planting seedlings for planting, the sizes of the potato seedlings can be consistent, the survival rate of the potato seedlings can be greatly increased, through reasonably controlling the planting density andcombining the added base fertilizer and scattered nutrient soil, a very good nutritional basis can be provided for subsequent growth of the sweet potatoes, and the tuberization rate of the sweet potatoes is increased; in combination with field management, rapid and healthy growth of the sweet potatoes can be promoted, and the harvested sweet potatoes are neat in size and shape; and the planted sweet potatoes have the advan