Sweet potatoes are sweet potatoes, sweet potatoes and sweet potatoes are different names of the same crop, and sweet potatoes root tubers for the red, white, purple, etc., and its shape will vary depending on the varieties and soils, the more common varieties of sweet potatoes are glutinous sweet potatoes, Qin yam No. 9, Guang yam 135, Beijing yam No. 6, Ning Zi 4 and so on.

2, specific varieties

The main varieties of sweet potato are glutinous rice sweet potato, Ning Zi 4, Guang yam 135, Ji yam 18, Beijing yam 6, Japanese Ling purple, etc., of which the glutinous rice sweet potato is a white sweet potato, the flesh of which is white, and Ning Zi 4 sweet potato is a variety of Jiangsu Academy of Agricultural Sciences, which is artificially selected, the flesh of which is purple.

3, watering management

Sweetpotato drought tolerance is strong, breeding sweetpotato, need to adjust the frequency of watering according to changes in the weather, in the rainy period, to discharge the water in the soil, so as not to reduce the yield of the sweetpotato, and in the sunny period, the sweetpotato should be watering water, so that the moisture content of the soil to maintain in the 60-80% between.

4, light conditions

Sweet potato is a short day crop, high light requirements, intolerant of shade, breeding sweet potato, if the sunshine time is too short, will lead to the plant can not carry out full photosynthesis, so that the sweet potato root thin, need to be planted in the sweet potato in the light of the soil, so that it accepts the light of not less than 8 hours a day.