The next six sweet potatoes are sweet potatoes grown on a local magical land. The characteristics of the next six sweet potatoes are: First, the flavor is unique. It is more fragrant, sweet, powdery and slippery than other sweet potatoes. It is delicious after eating, aftertaste, and nostalgia. Second, the next six sweet potatoes are smooth and wrinkle-free, and there is no pest. Third, the autumn potato in the next six sweet potato has been retained after the lunar calendar September 9. If it does not deteriorate, it will not deteriorate in the middle of the following year. Fourth, people found that they have better health care functions, especially for those with gastrointestinal discomfort.

Technical requirements for the quality of the next six sweet potatoes 1. Variety Big leaf red, sweet potato, swan potato, egg yolk. 2. Site conditions The soil type is river sand mud, river mud field or river clay field developed from river alluvial soil. The pH range is 6.0-7.0, and the soil organic matter content is 2-3%. Third, cultivation techniques Breeding 200g-300g potato chips, seeding in the middle of March and early April, cutting seedlings from May to June, carrying out secondary artificial planting and expanding, picking the heart when the seedling height is 20m, when the seedling height is more than 30m, there are 5-7 pieces. When the leaves are cut, the seedlings are planted. 2. The planting density is 4,000 per 667 m2. 3. Water and fertilizer management 667m2 into organic fertilizer ≧ 1500 kg, stop watering 20-30 days before harvest. 4. Harvest: From mid-late December to late January, the leaves are partially yellowed and harvested in time. 5. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. Fourth, quality characteristics Sensory features: The potato chips are smooth in appearance, uniform in size, soft in flesh and smooth in taste. 2. Physical and chemical indicators: fresh potato contains starch ≥ 26.73%, total sugar ≥ 29.70%. 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

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Producers within the scope of Xialiufan potato production area may submit an application to the Tunxi County Market Supervision Bureau for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Guangdong Provincial Bureau of Quality and Technical Supervision and reported to the General Administration of Quality Supervision, Inspection and Quarantine for approval. The testing organization of the next six sweet potato is selected by the Guangdong Provincial Bureau of Quality and Technical Supervision in the testing institutions that meet the qualification requirements.