Characteristic sweet potato varieties-Xinong 431 and Touxinhong

Xinong 431 is a new variety of fresh and roasted sweet potato cultivated by Northwest Agricultural University. it has medium and short vines, generally 1.5 meters in length, many branches in the basal part and heart-shaped leaves. Leaf color, leaf veins are uniform, light green. The tuber is early and concentrated, the tuber is spindle-shaped, the skin is smooth, the skin is orange, the flesh is orange, the dried potato is bright red, the food is sweet and sandy, the taste is good, and the flesh is easy to separate after ripening, which is very suitable for the processing of roasted potato and preserved potato. High resistance to stem nematode, black spot, waterlogging, storage and transportation. Spring potatoes generally yield 5000 kg per mu and summer potatoes about 3500 kg per mu. Its comprehensive characters such as high yield, early maturity and high quality are excellent, so it is one of the ideal varieties to replace Beijing 553. This variety is a new variety with high quality, good taste, extra high yield and excellent storage resistance, which was bred by Zhang Quanzhong, a farmer breeder in Laoji Potato Seedling Center, Linquan County, Anhui Province, for three years. This kind of potato is not only a good variety for processing starch, noodles and dried potatoes, but also a good product for roasted potatoes. Potato-shaped spindle, yellow skin, meat color like duck egg yolk, sun-dried potato bright red, very beautiful. Its quality, output and output value are more than twice that of "Beijing 553". Its comprehensive characters and economic output value are better than any domestic varieties at present, and are deeply welcomed by consumers. The yield per mu of spring planting is about 6000 kg, and that of summer planting is about 4000 kg. It has strong fertilizer tolerance, high rate of big potato, neat potato pieces and fast expansion speed. The vine is 1 meter long, easy to close planting, the leaf color is green, and the average weight of spring potato is 1.5 kg per plant. The large plant is more than 8 kg. It contains 6.3% sugar, 24% starch, 32% sun drying rate, sweet taste and large powder. Early spring planting in August can be harvested on the market, coinciding with the off-season, summer planting in late November harvest, storage overwintering or post-harvest listing are good products in baked potatoes.