Potato Jichengshu No. 1

Main traits: plant type upright, medium branching, plant height 50-60cm, stem green, strong growth vigor: leaves green, medium-many hairs, large compound leaves. Leaf margin flat, 4 pairs of lateral leaflets, medium density arrangement, inflorescence peduncle green, pedicel articulation colored, corolla light purple, petal tip colorless, corolla large, no double petals, purple-red, apex pointed, light purple, medium-many hairs; tubers have a long dormancy period, good storability. Late-maturing, growth period about 120 days; excellent quality when steamed; processing quality: dry matter 20.2%, starch 12.2-16.4%, reducing sugar 0.64%, crude protein 1.3%, vitamin C 19.6mg/100g; the plant is relatively resistant to late blight, the tubers are disease-resistant, resistant to blackleg and ring rot, resistant to leafroll virus disease, relatively resistant to mosaic virus disease; the usual yield per 667 sq m is about 2000kg, with high yields reaching over 3000kg.

Suitable planting areas: adapted for planting in the North China single-cropping region, mainly distributed in areas below 1200 m altitude in Weichang County, Hebei Province.

Key cultivation techniques: the suitable density for this variety is about 3500 plants per 667 sq m; removing flowers and buds can achieve [higher yields].