How much is a jin of black potatoes? What are the nutrition and efficacy? Attached planting technique

Some people have seen a strange kind of potato on the market, the skin is smooth, not only the skin is black-purple, its flesh color is also purple. So how much is a jin of black potatoes? What are the nutrition and efficacy?

How much is the black potato per jin?

Potatoes are obviously different from the usual potatoes. Black potatoes are dark purple and glossy on the outside, dark purple inside cut black potatoes, and black potatoes look like purple potatoes, but the two are not a vegetable variety. Black potatoes are divided into black beauty potatoes and black King Kong potatoes. The price of black beauty potato is about 3-5 yuan, and the price of black King Kong potato is about 6-8 yuan.

Nutrition and efficacy of black potato

Black potato is rich in nutrition, including 2.3g protein, 12g starch, vitamin C219 mg, 0.1g fat, 16.5g carbohydrate, calcium 11mg, iron 1.2mg, phosphorus 64mg, potassium 342mg, magnesium 22.9mg, carotene 0.01mg, thiamine 0.1 mg, riboflavin 0.03mg, nicotinic acid 0.4mg, ascorbic acid 16mg, anthocyanin 100mg. Anthocyanin is a direct, effective and safe free radical scavenger found in the scientific community to prevent and cure diseases and maintain human health. its scavenging ability is 20 times that of vitamin C and 50 times that of vitamin E.

According to traditional Chinese medicine, black tonifying the kidney and kidney is the congenital foundation, and the source of life is fixed in the kidney. Black food can strengthen the body, moisturize the skin and beauty, strengthen the body and prolong life; modern medicine believes that black food is not only nutritious, but also has unique effects such as kidney tonifying, anti-aging, health care and longevity, disease prevention and treatment, black hair beauty and so on. With the improvement of people's living standards and the enhancement of the concept of health, black potatoes will quickly enter the domestic and foreign markets and become the first choice of pollution-free health food for consumers.

III. Planting techniques

1. Sprouting and chopping

20-30 days before sowing, the selected seed potatoes were placed evenly under the environment of 20 ℃, properly sprayed with water and shaded with grass curd. When the young buds grow to the size of soybeans, put the seed potatoes in a warm and sunny place to make the seedlings green and strong buds. Cut the seed potato 1-2 days before sowing, and the weight of each seed potato is about 25 grams. Small seed potatoes are cut vertically, with strong buds at the top of each cut; large seed potatoes are cut from the tail to eliminate weak buds, arranged in the order of the bud eyes, cut diagonally from the top, and finally split the top into two.

2. Soil preparation and sowing

Black potato has a short growth period and needs more concentrated fertilizer. Spread high-quality organic fertilizer, diammonium phosphate and urea. After fertilization, the soil will be ploughed and raked. Black potato planting should be sparse and not dense, ditch according to row spacing of 70 cm, ditch depth of 5 cm, when opening ditch, phoxim granules are applied to control underground pests such as ground tiger. It can suppress and straighten the ridge shape in time after sowing, spray herbicide and new high-fat film at the same time, and cover the plastic film.

3. Field management

After the seedlings are unearthed, the membrane should be broken in time to release the seedlings, and the seedling holes should be sealed with wet soil. When the seedlings come out, in order to promote the early growth of the seedlings, Zhuangtieling can be sprayed on the leaves; in the flowering stage, the buds should be removed in time. In order to improve the rate of large potatoes, Di Guo Zhuang Diling can be sprayed on the leaves. The main disease of black potato is late blight, and the pests are aphids and ladybugs. The control of late blight can be sprayed with 64% poisonous alum 600 times solution + new high lipid membrane, and the control of aphids and ladybugs can be sprayed with 18% Lesben 1000 times solution + new high fat membrane.

4. Timely harvest

According to the market supply and marketing situation, timely harvest, harvesting process to minimize mechanical damage, so as not to affect the quality of goods.