Sweet potato planting method is as follows:

Sweet potato grows better in sandy loam soil and well fertilized plots. After the land is prepared, the method of ridge planting is adopted, which is conducive to the growth of the potatoes and convenient for drainage. Sweet potato growth process needs nitrogen, phosphorus and potassium elements, need more nitrogen in the early stage, more potassium in the middle and late stage, in the application of bottom fertilizer, 5000 pounds of available farmyard manure per acre, plus a bag of compound fertilizer.

Spring sweet potato planting is generally planted when the ground temperature is stabilized at 15 ℃ or more, there are flat planting, oblique planting and other methods. Flat planting is suitable for good soil conditions, water and fertilizer plots. Oblique planting is suitable for dry, medium water and fertilizer plots, seedlings will be planted diagonally into the ridge. In order to prevent underground pests, before planting seedlings, the root dipping treatment, commonly used insecticidal ingredients, chlorpyrifos microencapsulated suspension, imidacloprid, choose one of them to be prepared into the root dipping solution. When planting seedlings, insert the roots of seedlings into the root dipping solution and soak for two or three minutes.

Sweetpotato is a dryland tuberous root crop, with high fertilizer demand and no obvious maturity period, while soil waterlogging is taboo throughout the reproductive period. Therefore, according to the growth characteristics of sweet potato management in order to maintain the sweet potato above ground and underground part of the balanced growth and get high yield. The critical temperature for the growth of sweet potato tuber is 15℃, below 9℃ will cause frost damage, it is advisable to start harvesting when the temperature drops to about 15℃, and finish harvesting at about 12℃.

Pests of sweet potatoes

Pests mainly include the oblique moth, sweet potato leaf beetle. Striped night moth can be sprayed in late June with 10% of the elimination of 1000 times liquid, 5% of the inhibition of TaiBao 800-1000 times liquid or 48% of Lesbian 1000 times liquid spray. Sweet potato leaf beetle can be 30d after potato seedling cuttings. Spray with 20% triazophos emulsion 600 times liquid or 2.5% dichlorvos 4000 times liquid.