Qingshu 168

Breeding unit: crop Research Institute of Qinghai Academy of Agricultural Sciences.

Approval: it was approved by Qinghai crop Variety approval Committee in 1989 and by the National crop Variety approval Committee in 1993.

Variety registration number: GS05002-1992.

Variety source: Fushen 6-3XDesiree. Special plant characteristics: the plant is erect, the stem is sturdy, the stem is about 1.3 cm, the number of main stem is 2mur3, the number of branches is about 2, the branching position is higher, the branches and leaves are luxuriant, the leaf color is dark green, the leaves are medium size, the leaves are thicker, the flowers are purplish red, the flowers are more flowering, the tubers are early and concentrated, the average number of tubers per plant is 10, the rate of large and medium tubers is more than 88%, the tuber is oblong, the potato shape is good, the potato skin is red, smooth, and the buds are light. Potato meat is yellow. Potato cubes contain 17.3% starch, 2.07% crude protein, 21.7% dry matter, 68% reducing sugar and 113.4 mg / 100kg vitamin C. The whole growth period is 164 days, the disease resistance and stress resistance are strong, the storage resistance is strong, the commodity rate is high and the taste is medium. From 1990 to 1991, he participated in the national northwest regional test of potato varieties, and the average yield per mu was 2390 kg and 1783 kg respectively.

Cultivation points: sowing at the right time, water land in the first and middle of April, and dry land from late April to early May. For whole potato sowing, about 250 kg per mu will be sown, and 3500 seedlings will be protected per mu; for cut potato sowing, 150 kg will be sown per mu, and 5000 seedlings per mu. The cutter should be disinfected and the seeds should be mixed with grass ash. The planting method of wide row and wide ridge or wide and narrow row is adopted. The application of farm manure is more than 2000 kg per mu, and chemical fertilizer should be used in combination with nitrogen, phosphorus and potassium. Urea 15 kg per mu and potassium sulfate 10 kg per mu.