Sweet potatoes are used in a variety of ways, up to ten. But today's Xiaobian is about to introduce high-starch sweet potato varieties. These varieties are mainly used for processing into starchy products. Let's talk about the high starch type sweet potato varieties! For high-starch-specific sweet potato varieties, the fresh potato dry matter rate is 2.6 percentage points higher than the national sweet potato variety regional test control variety, and the starch content is generally 22%-26% (more than 24%). The starch yield increased by 10%-20% compared with the control variety. Some high-starch-specific varieties also have certain processing quality characteristics and disease resistance against "saccharification" and "browning". (1) Shangshu 19 (Guo Jianshu 2003004) As a starchy sweet potato with a large domestic planting area, many starch processing plants are happy to acquire spring potato 19. It is recommended that the spring potato potato 19 must be covered with early film, even if it is not powdered, it will be very good to sell commercial potatoes in August. the price of. The income of Shangshu 19 after the shovel is also a very stable variety. Characteristics: The leaves are heart-shaped, the leaves are all green, the stems are thick, the length is long and the branches are medium. The potato is early, tidy and especially concentrated without “running†and is easy to collect. The potato chips are more and more uniform, the skin is smooth, the potato rate and the commodity rate are high. The potato pieces are spindle-shaped, the skin is purple-red and the meat is white, the drying rate is 36-38%, the starch content is 23-25%, and the starch is especially white. It has high resistance to root rot, stem nematode disease and black spot disease, and has good stagnation resistance. Cultivation techniques: The planting density is 3000-3500 plants per 667 square meters. Pay attention to the prevention and treatment of black spot disease in the production process, it is not suitable for planting in the severe disease area of ​​black spot disease. This variety is suitable for spring and summer potato planting in Henan, Hebei, Anhui and Jiangsu. (2) Xushu 25 (Guojian Sweet Potato 2007002) Characteristics: The germination is good, the middle and long vines, the heart of the leaves are toothed, the top leaves and leaves are green, the veins are purple, the stems are green with purple spots; the potatoes are tidy and concentrated, and the number of potatoes per plant is medium. The rate of large and medium-sized potatoes is high (more than 95%), the potato pieces are long-spindle type, red-skinned white meat, few purple halo, white dried potatoes, good quality and good taste. The spring potato drying rate (28.15%) and the flour extraction rate (16.17%) are comparable to those of Xushu 18, and the potato shape is beautiful. The potato buds have good germination, slightly better than Xushu 22, Miaoduo, Miaoyun and Miaozhuang. The new variety is cold-tolerant, resistant to cockroaches, highly resistant to sweet potato root rot, and resistant to sweet potato stem nematode and black spot. Key points of cultivation techniques: Xushu 25 has good germination ability, and the seeding quantity can appropriately control the seeding quantity, pay attention to high shearing seedling or high temperature healing to prevent black spot disease. The variety is a medium-long vine type, and the density is preferably 3300 to 3500 plants/666.7 m2. Pay attention to the drainage and waterlogging to ensure a bumper harvest. The variety is suitable for spring and summer potato cultivation in the Huanghuai potato area and the northern potato area (Henan, Shandong, Shaanxi, and central and southern Hebei, central Anhui, and northern Jiangsu). (3) Xu Dong 22 (Guo Jianshu 2005006) Characteristics: The top leaf is green, the leaf heart is tooth-shaped, the leaf color, the vein color, and the petal color are all green, and the leaf base is purple. Medium long vine, stem green; potato swelled spindle shape, red skin white meat, sweet potato concentration, upper potato rate 90%, potato germination good; dry matter rate 35.7%, starch rate 21.48%; medium resistance to root rot . Cultivation techniques: planting density, 3,500-4,000 strains of spring potato per 667 square meters, 4000-5000 strains of summer and autumn potatoes. It should not be promoted in the area of ​​heavy stem nematode, suitable for spring and summer potato planting in Jiangsu, Zhejiang, Jiangxi, Hunan, Hubei, Sichuan, Chongqing, Henan, and other places. (4) Yushu No. 7 Characteristics: The leaf has a heart shape and a medium vine type. The parietal leaves, veins, stalk bases, and leaf bases are all purple, the leaves are thick green, and the stems are green and purple. The stem length is 2.12m, and the number of branches is 6.47. The field has strong growth potential and does not prematurely decay in the later stage. 1-4 pieces of potato per plant, the potato pieces are long-spindle-shaped, the rate of large and medium-sized potatoes is 86.46%; the potato skin is red and the meat is white. Delicate-flavored dry noodles are sweet and no potato. The drying rate was 31.92%, and the starch rate was 22.61%. The potato bud has good germination and good storability; it has strong growth potential, is resistant to phlegm and is drought-resistant. In the same period, the seed potatoes were planted for 7-9 days earlier than the control Xushu 18. Resistance to stem nematode and black spot, root rot. Key points of cultivation techniques: Root rot areas should not be planted; planting density is 3500-4000 per 667 square meters; places with good water and fertilizer conditions should be prevented from being long, and it is possible to control the application of nitrogen fertilizer, increase potassium fertilizer, and spray on the foliage before and after sealing the ridge. Paclobutrazol is chemically regulated. (5) Jishu No. 15 (Guo Jushu 2001002) Characteristics: Leaf shape, leaf vein green, vein base purple, small leaves, vine green, potato block spindle shape, potato skin purple potato flesh yellow; plant type semi-erect, potato tidy, storability, germination , emergence more seedlings; drying rate and starch rate two years average of 31.97% and 21.45%, respectively, high resistance to root rot. Cultivation technology points: 4000-4500 plants per square meter of spring potato. It is suitable for planting non-stem nematode diseases in northern spring and summer potato areas. (6) Sushu No. 11 (Guojian Sweet Potato 2007005) Characteristics: long vine type, stem green, leaf heart shape, green leaves of green leaves, green veins of leaves, purple petiole green, base branch 7-8, single potato 3~4, potato block spindle-shaped, epidermis The red fleshy white color, the potato habits are concentrated and neat, the potato yield is higher, the potato buds have good germination, and the growth period is about 140 d. Resistance to root rot but not to stem nematode disease; identification by indoor artificial inoculation showed that Sushu No. 11 is not resistant to black spot disease. The total soluble sugar is 3.1%, the potato protein content is 6.64%, and the cooked dry noodles are of good quality, which is suitable for starch processing. The amount of early, dry matter and dried potato yield of Sushu No. 11 was high. Key points of cultivation techniques: Sushu No. 11 can be used for spring and summer potato planting. The density of spring potato planting is 3300-3500 plants/667m, and the density of summer potato planting is 3500-4000 plants/667m. The resistance of black potato spot of Sushu No. 11 is poor, and the prevention and control of black spot disease should be paid attention to in production. Three points should be noted when selecting sweet potato varieties: 1. Adaptability. It is necessary to use varieties that have suitable growth period and are suitable for local meteorological, soil, fertilizer and water conditions. 2, specificity. According to the needs of the use and the market, select the varieties that are marketable. 3. Resistance. According to the local conditions, natural disasters, the selection of appropriate disease-resistant, disaster-resistant varieties. Do not blindly believe in all kinds of small advertisements when introducing seeds. It is necessary to clarify the source, characteristics, use, true and false, and disease resistance of the varieties (especially against root rot, resistance to yam, etc.), and it is strictly forbidden to mobilize seed potatoes from disease-affected areas. In terms of production, according to market demand, select special varieties suitable for the ecological environment conditions of the region. The following small series share the following high-starch sweet potato varieties, and with scientific planting technology will get very good economic benefits! The above content hopes to help everyone. This year, we will choose a variety that is suitable for local development and planting in order to get a bumper harvest! Corn is a good choice for consumption during weight loss because of its high available energy. The metabolic energy of maize is 14.06 MJ/kg, with the highest being 15.06 MJ/kg, the highest of the cereal feeds. 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