Method for planting sweet potato

Planting techniques and management of sweet potato include soil preparation and fertilization, sowing and seedling raising, scientific fertilization, foliar spraying and disease control.

1, soil preparation and fertilization

It is very important to choose fertile and loose plots to grow sweet potatoes. When planting, the plot should be deeply turned, and then sufficient organic fertilizer should be applied to wrap the fertilizer in the ridge, and a row should be opened on the back of the ridge with a hoe to keep the fertilizer uniform in the plot.

2. Seedling raising and field planting

Lay potato seedlings flat along the ditch, bury their heels and water them to promote their growth. When sweet potato seedlings grow to a certain length, it is necessary to do a good job of transplanting and planting. In order to promote the rapid growth of root system, it is necessary to water the root system.

3. Scientific fertilization

After planting 15 days, farm manure should be supplemented in time, supplemented by chemical fertilizer. For plots with good fertility, 25-30 kilograms of urea, 30-50 kilograms of ordinary phosphorus and 30-40 kilograms of potassium sulfate are applied per mu. During the growth of sweet potato, if the leaves turn yellow, rattan fertilizer should be applied in time, mainly phosphorus and potassium fertilizer.

4, foliar spraying fertilizer

Spraying 0.3% potassium dihydrogen phosphate on sweet potato leaves during tuber growth can help sweet potato sweeten and improve its quality. Stop watering before harvest 15 days, so that sweet potatoes taste better and can be stored.

5. Disease control

Sweet potato is prone to diseases and insect pests such as ant weevil and black spot. In the process of sweet potato growth, we should pay attention to cultivation management. Once the ant weevil appears, 40% dimethoate EC should be sprayed, and the seeds can be soaked with 300-500 times of 50% carbendazim, which can play a good control effect.