Characteristics of late-maturing fresh food species, the number of days after emergence is about 115 days. Plant type semi-upright, plant height 70-80 cm, stem green, dark green leaves, corolla milky white, stamen yellow, no natural strong. The tubers are oblate and round, pale yellow skin and white flesh, lighter buds, 5-8 single plants, and the commodity potato rate is 73.1%. Seedling growth is strong, adult plants are flourishing, main stems are more branched, tuber dormancy is longer, and it is more resistant to storage. Field performance is strong against degradation and resistant to late blight. Indoor inoculation identification: Medium anti-light mosaic virus disease, heavy mosaic virus disease, middle sense of late blight. Tuber quality: dry matter 23.3%, crude starch content 16.1%, crude protein content 2.16%, vitamin C content 11.2 mg/100 g fresh potatoes, reducing sugar content 0.36%.
Production Performance 2002-2003 participated in regional trials of the national potato varieties in the Middle and Late Maturity Northwest and North China Formations. The average yield per mu in the middle-late-maturing northwestern group was 1,651 kilograms, an increase of 8.6% over the control Shushu 3, and the middle-late-maturing Huabei group averaged 1603 kilograms per mu. Increased production by 6.3% compared to control purple. In production trials in 2004, the middle-late-maturing northwestern group averaged 2,304 kilograms per mu, an increase of 17.5% over the control Shucha 3, and the middle-late-maturing Huabei group had an average yield of 1,618 kilograms, an increase of 19.8% over the control.
Cultivation techniques
1. Seed sowing in the middle of April in the cold, damp, and cloudy areas, and sowing in the semi-arid area in April and mid-April, should not be delayed.
2. Planting density per acre, 4000 plots in general and 2,500 to 3,000 in thin and dry plots.
3, management, pay attention to early fast, first promote the control, re-application of basic fertilizer, nitrogen, phosphorus fertilizer; early application of top dressing, avoid excessive nitrogen; early weeds, early cultivator soil, soil ridge to high and steep. In the cold, damp and humid areas and the Hanyin area, where the water and fertilizer conditions are good, when the plant height exceeds 60 cm at the early flowering stage in early July and there is an appetite tendency, spraying paclobutrazol or potato swollenin to control leggy and promote tuber formation and enlargement.
4. Cut the yam meal 1 week before harvest and transport it out of the field to facilitate the drying of the ground and promote the aging of the potato peel. When harvesting, gently take the tuber gently to avoid collision, reduce the infection of the bacteria and improve the storage effect.
Appropriate Scope This variety is suitable for planting in the high-cold, damp, and yin region of Gansu Province, southern Ningxia, southeastern Qinghai, northern Hebei, central Inner Mongolia, and north northern Shanxi.
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