Mackenzie No. 1: Mid-late maturing variety; post-seedling growth period of about 90 days, potato-shaped oblong, with rough skin, shallow eye. Plant height is about 70 cm, upright in shape. High starch content, floury texture, mainly suitable for potato chip and full powder processing. High yield, suitable for one-season and two-season cultivation areas. Yield per mu ranges from 7,000 to 9,000 jin.