The key to high-yield cultivation of sweet potatoes lies in the following:
1.Choose the right soil and climatic conditions: Sweet potatoes are adaptable dryland crops that need to be grown in sandy loam or loam soils with a pH of 5-7. The temperature requirement is between 16-35, the optimum temperature is 22-24, and the moisture requirement is maintained at 60%-70% in the early and late stages, and 70%-80% in the middle stage. The light requirement is sufficient, and the more light there is, the higher the yield.
2.Choose high-yield varieties: such as Watermelon Red, Pushu No. 23, Guangshu No. 135, Yanshu No. 25, Xu Shu No. 22 and Chaoshu No. 1 are all common high-yield and delicious varieties, and suitable varieties can be selected according to market demand.
3.Timely and early planting: The use of plastic film can prolong the growth period and increase the accumulation of nutrients, thereby increasing the yield of sweet potato.
4.Reasonable fertilization: Sweet potato is a crop that needs more fertilizer, and it is necessary to apply 4-5 kg of pure nitrogen fertilizer (N), 2-3 kg of phosphate fertilizer (P205) and 7-8 kg of potassium fertilizer (K20). It is recommended to use potassium fertilizer as the main fertilizer, appropriate amount of nitrogen fertilizer, and potassium and phosphorus as the combination.
5.Planting density: A reasonable planting density can increase the number of tubers, and it is recommended to use ridge cultivation.
6.Strengthen field management: including rooting and seedling slowing stage, branching and tubing stage, stem and leaf growth tuber expansion stage, stem and leaf decline root expansion stage and crack fertilization stage. Scientific management is required at every stage.
7.Pay attention to the prevention and control of pests and diseases: When planting sweet potatoes, the prevention and control of pests and diseases is very important, and measures should be detected and taken in time.
Through these measures, a bumper harvest of sweet potatoes can be achieved. Sweet potato cultivation techniques