Detailed Explanation of Key Points for High-Yield Cultivation Techniques of Spring Sweet Potato

Sweet potato has always been a food we relatively like to eat, and it is also the main planting crop for many growers. How can spring sweet potato be cultivated to achieve high yield?

High-Yield Cultivation Techniques for Spring Sweet Potato

1. Selection and planting of seedlings. We need to choose excellent seedlings with thick and well-developed vine stems as seed seedlings; such seedlings have a high survival rate, sprout quickly, and also ensure yield. Sweet potato has no obvious maturity period, so we can appropriately plant early to extend the development period, thereby using the climate conditions before the rainy season to promote the expansion of pure sweet potato storage roots and store photosynthetic products better.

2. Preparation of the planting site. Since high yield is required, we must choose soil suitable for the growth of spring sweet potato; here we choose land with good air permeability in the soil layer, timely oxygen supply and drainage, and a loose structure. It needs to be deeply plowed and ridged, and sufficient base fertilizer should be applied at the same time. Generally, per mu apply more than 4000 kg of organic fertilizer, 10 kg of urea, 20 kg of diammonium phosphate, and 25 kg of potassium sulfate. Ridging is for facilitating heat dissipation and drainage in the field.

3. Do a good job in growth-promoting measures. To prevent the many nodal roots and nutrient dispersion caused by the rapid growth of spring sweet potato after rain, we can combine vine lifting to increase ground temperature and prevent nodal roots. To control the growth of the main stem, mainly use topping and pinching to promote storage root expansion.

4. Proper topdressing. In addition to the base fertilizer applied, we also need to topdress spring sweet potato. There are two ways. One is when cracks are generally present in the field, irrigate plant by plant along the cracks in the afternoon, with fertilizers mainly including urea, potassium sulfate, superphosphate extract, etc. The other method is to spray the prepared nitrogen and potassium fertilizer through the leaf surface.

The above is a brief introduction to the high-yield cultivation techniques of spring sweet potato. We hope it is helpful to you.