How much is black potato per jin? A full analysis of its nutrition, benefits and cultivation techniques
Some people have seen a peculiar kind of potato in the market, with smooth skin; not only is the skin blackish-purple, but the flesh color is also purple. So how much is black potato per jin? What nutrition and benefits does it have?
1. How much is black potato per jin?
The potato is clearly different from the potatoes usually seen. The black potato has a blackish-purple, glossy appearance, and when cut open its interior is deep purple. The black potato looks very much like a purple sweet potato, but the two are not the same vegetable variety. Black potatoes are divided into two types: Black Beauty potato and Black King Kong potato. The price of Black Beauty potato is around 3-5 yuan, and the price of Black King Kong potato is around 6-8 yuan.
2. Nutrition and benefits of black potato
Black potato is rich in nutrition. Every 100g contains 2.3g protein, 12g starch, 219mg vitamin C, 0.1g fat, 16.5g carbohydrates, 11mg calcium, 1.2mg iron, 64mg phosphorus, 342mg potassium, 22.9mg magnesium, 0.01mg carotene, 0.1mg thiamine, 0.03mg riboflavin, 0.4mg niacin, 16mg ascorbic acid, and 100mg anthocyanin. Anthocyanin is currently the most direct, effective and safe free radical scavenger discovered by the scientific community for preventing and treating diseases and maintaining human health. Its scavenging capacity is 20 times that of vitamin C and 50 times that of vitamin E.
Traditional Chinese medicine holds that black foods tonify the kidney, that the kidney is the foundation of innate constitution, and that the source of life is consolidated in the kidney; black foods can consolidate the foundation and support the vital energy, nourish the skin and beautify the face, strengthen the body, and prolong life. Modern medicine holds that black foods are not only rich in nutrition, but also have unique effects such as tonifying the kidney, preventing aging, preserving health and prolonging life, preventing and treating diseases, and darkening hair and beautifying the face. With the improvement of people's living standards and the strengthening of health concepts, black potato will surely enter domestic and foreign markets rapidly and become the preferred pollution-free health food for the vast number of consumers.
3. Cultivation techniques
1. Sprouting and cutting
20-30 days before sowing, place the selected seed potatoes evenly under conditions of 20°C, spray water appropriately, and shade them with straw mats. When the young sprouts grow to the size of a soybean, place the seed potatoes in a warm, sunny place to sun the seeds, so that the seedlings turn green and the sprouts become strong. Cut the seed potatoes 1-2 days before sowing, with each seed piece weighing about 25 grams. Small seed potatoes are cut vertically, and each piece must have a strong top sprout; large seed potatoes are cut starting from the tail end, eliminating weak sprouts, and cut diagonally from the top according to the arrangement of the buds, finally splitting the top into two.
2. Land preparation and sowing
Black potato has a relatively short growth period and a relatively concentrated fertilizer requirement. Broadcast high-quality organic fertilizer, diammonium phosphate and urea, then deep-plow and finely harrow the soil after fertilizing. Black potato should be planted sparsely rather than densely. Open furrows at a row spacing of 70 cm and a furrow depth of 5 cm. When opening the furrows, apply phoxim granules to control cutworms and other underground pests. After sowing, press down the soil promptly and shape the ridges well, and at the same time spray a mixture of herbicide and Xin Gao Zhi Mo for control, and cover with plastic film.
3. Field management
After the seedlings emerge, break the film promptly to release the seedlings, and seal the seedling holes tightly with moist soil. After the seedlings have all emerged, in order to promote early bushy growth of the seedlings, spray Di Guo Zhuang Di Ling on the leaves; during the flowering period, remove the flower buds promptly. To increase the proportion of large tubers, spray Di Guo Zhuang Di Ling on the leaves. The main disease of black potato is late blight, and the pests are aphids and ladybird beetles. To control late blight, spray with 64% Sandofan 600-fold solution + Xin Gao Zhi Mo; to control aphids and ladybird beetles, spray with 18% Lesiben 1000-fold solution + Xin Gao Zhi Mo.
4. Timely harvest
Dig and harvest at the appropriate time according to market supply and demand conditions. During the harvest process, mechanical damage should be minimized as much as possible so as not to affect commercial quality.