variety
Green Potato No. 9, Jizhang Potato No. 8, Jizhang Potato No. 14, new Daping, Long potato series, Ding potato series.
Site condition
The elevation is 1640 to 3900 meters. The soil types are mainly black loessial soil and yellow loessial soil, deep soil layer, organic matter content ≥0.8%, and soil PH value is 5.5 to 7.8.
Cultivation management
Sowing: When the temperature of the 10cm soil layer is stable at 7 to 9ºC, the seeds can be sown, generally in mid-April to early May. Seed potato potato block ≥ 25g, each potato block 1 to 2 eyes, planting density 49500 to 75,000 plants per hectare.
Fertilization: Apply quality farm manure 15000 kg per hectare, special potato fertilizer 750 to 1200 kg.
Rotation system: Implement more than 3 years of rotation.
harvest
It is generally harvested from mid-September to mid-October.
storage
Store in time after harvest to avoid potato skins turning green, forced ventilation to avoid rot, and keep the temperature between 0ºC and 4ºC and relative humidity around 80% during storage.
Quality characteristics
Sensory characteristics: round or oval shape, light eyes, potato skin smooth.
Physical and chemical indexes: starch content ≥ 16g / 100g, dry matter content ≥ 23g / 100g, potassium content ≥ 350mg / 100g.
Safety requirements: Product safety and other quality technical requirements must comply with relevant national regulations.