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Planting method and time of sweet potato
The best sowing date of sweet potato is mid-May. The planting method can start with seed selection, sowing and watering.

First, the planting time of sweet potato

The planting time of sweet potato is generally from April to May every year, and the best sowing time is in mid-May. During this period, the temperature is basically stable at about 15-20 degrees, which is more conducive to germination and can germinate faster after sowing. In addition, pay attention to the long growth cycle of sweet potatoes, and generally wait until autumn and winter to receive the goods.

Second, the planting method of sweet potato

1, seed selection: The sowing method of sweet potato is very simple. First, choose seeds to ensure that the seeds are strong and disease-free, and choose ones with large volume and many buds, so that the germination grows quickly. In addition, the seeds should be soaked in carbendazim solution for disinfection before planting, which is about 10 minute.

2. Sowing: It can be planted after soaking and disinfection, directly placed in the dug ditch, and then covered with soil in time. Pay attention to heat preservation treatment in the later stage. If the temperature can't reach, cover it with plastic film and uncover it when the seedlings grow to 30-40 cm. In the later stage of cutting propagation, the roots of seedlings should be covered with soil.

3. Watering: The water consumption in the early stage of sweet potato planting is large, so it needs to be watered frequently. Usually water it once a day. Over time, as long as the amount of watering is reduced in the later period, watering once a week will meet the demand.

Matters needing attention in sweet potato planting

1. During the growth of sweet potato, the pests are mainly leaf roller moth, aphid, grub and vole. Leaf rollers and aphids generally harm sweet potato leaves and affect photosynthesis. White grubs and voles also bite sweet potatoes.

Leaf rollers and aphids can generally be sprayed with trichlorfon solution, but the spraying effect on voles is not good. It is necessary to put voles' favorite food in the field and mix rodenticide to trap them.

2. Sweet potato is suitable for living in warm and sufficient light, and the most suitable temperature for sweet potato germination is above 10℃. Note that it will not germinate below 10℃, and the temperature suitable for the normal growth and development of roots is around 18℃.

In order to make the leaves of sweet potato grow well, it is necessary to ensure sufficient light to improve the yield and quality of sweet potato. Note that if the required illumination time is not reached during the growth of sweet potato, the leaves of sweet potato will wither and fall off, which will hinder the growth of stems and vines and lead to a decline in yield.