One, 55-2 sweet potato. This species was introduced into Japan by Japan. The Shandong Shanxian Agricultural Technology Application Research Institute has been planted at multiple sites to demonstrate strong disease resistance, wide adaptability, resistance to ridges and fertilizers, and high yield and stability. In the middle of the growing season, the leaves are larger in heart shape, with jagged edges, dark green leaves, purple purplish leaves in 3-5 heads, dark green stems, thick and thin stem segments, and strong and stable growth. 70-100 cm, do not turn vines. The potato was early and concentrated, and the potato block was spindle-shaped, with smooth skin and uniform size. The potato skin was purplish red and the potato meat was light yellow. The starch content was 17%-19%. The drying rate is 36%. Can be used to extract starch, but also suitable for fresh food, grilled food, cooking, good taste, sweet surface sand. Rich in selenium, it is both health and beauty foods, and it also has a good preventive effect. The yield of spring potato is 6000-7000 kg, and the yield of summer potato is about 4000 kg. Second, 9408 sweet potatoes. This species is native to the United States. After four years of trials and demonstrations by our institute, it has shown high resistance to root rot, black spot, and nematode disease, and has wide adaptability, good comprehensiveness, and high and stable yields. Dark green leaves, small leaves, steady growth, short stem segments, less adventitious roots, vines about 1 meter long, without turning vines. Potatoes are particularly early and concentrated. The rate of large potatoes is high. The potato pieces are spindle-shaped, the red skin of potatoes is bright, the potato meat is white, and the starch content is 19%. The dry rate is 38%. Tubers are resistant to storage. The output of spring potato is between 5000 and 7500 kilograms, up to 10,000 kilograms high and 4000-6000 kilograms per day. Prebiotic Fiber,Pre And Probiotics,Prebiotic Supplements,Prebiotic Probiotic Shandong Bailong Chuangyuan Bio-tec Co.,Ltd , https://www.Chinabailong.com