In the early stage of dried potato processing, it takes about 60-70 days seedling planting to pot sealing for spring potatoes about 40 days for summer potatoes. During this period, the growth of stems leaves is slower, the development of roots is faster, which is mainly the period of growing fibrous roots. Middle stage: The middle stage is sealing the pot to the peak of stem leaf growth, with spring potatoes lasting for about 50 days summer potatoes lasting for about 30 days. During this stage, the root tubers expand slowly the stems leaves grow rapidly, mainly during the growth of stems leaves. With the continuous increase of China's population, the demand for agricultural products continues to grow, the area of arable land continues to decrease, water resources are becoming increasingly scarce, the ecological environment is deteriorating.

China's food demand is facing enormous pressure, the supply demand of food have been in a tight balance for a long time. Sweet potatoes have less input more output, the edible dry matter per unit area is abundant in various crops. Sweet potatoes have strong disaster resistance, drought resistance, barren tolerance. They can also be planted in hilly mountainous areas. In areas crops are difficult to grow, sweet potatoes can also achieve good yields.

Xinyin 1: This variety was newly introduced by the Xinnong Potato Industry Center in Xinle City in 2005. It has high yield, high dryness, good taste, with a yield of 7000 to 8000 kilograms per mu. The potato is Fusiform shaped, with purple skin light yellow flesh. The drying rate is 33%, 3 percentage points higher than that of Xushu 18. The leaf has a toothed heart, the top leaves stems are all green in color. They have many branches, long stems, strong growth momentum, good drought resistance.

Potatoes are abundant concentrated, suitable for planting in spring summer. Delicious sweet noodles with a rich aroma, this variety has good adaptability, does choose soil, has a wide range of suitability. The ridge spacing is 80 centimeters, the ridge height is about 20 centimeters. Special organic compound fertilizers can be used for fertilizers. When the planting area is large, it is required to measure soil N, P, K, organic matter. In the south, soil pH value should also be measured, the use of ordinary compound fertilizers is recommended. For potato fields with more branches vigorous growth, scissors can be used to cut off two three branches, which can allow nutrients to flow back allow the potato blocks to receive more nutrients.