High benefit cultivation techniques of Black Potato

1. Characteristic seedlings erect, luxuriant plant clusters, tall plant type and strong growth potential. The plant height is 60 cm, the stem diameter is 1.37 cm, the stem is dark purple, and the cross section is triangular. The main stem is well developed and has few branches. Leaves dark green, petiole purple, Corolla purple, petals dark purple. Potato body long oval, smooth skin, dark purple, black shiny, full of luster. The sweet potato meat is dark purple and compact. The appearance color is seductive. The starch content is 13% to 15%, and the quality of flavor noodles is good. The bud eyes are shallow and the number of bud eyes is medium. Tuber is concentrated, there are 6 ~ 8 tubers per plant, and the weight of single potato is 120 ~ 300 grams. The whole growth period is 90 days, which is a mid-early maturing variety with strong drought and cold tolerance, wide adaptability and storage resistance of potato pieces. Resistant to early blight, late blight, ring rot, black shank, virus. Generally, the yield per mu is 2000 kg to 2500 kg, which is about 15% higher than that of ordinary varieties. It is suitable for the cultivation of potato in the main and secondary producing areas of the whole country, and the development prospect is promising.

Second, edible value black potato is nutritious, containing 2.3 grams of protein, 0.1 grams of fat, 16.5 grams of carbohydrates, 11 milligrams of calcium, 1.2 milligrams of iron, 64 milligrams of phosphorus, 342 milligrams of potassium, 22.9 milligrams of magnesium, 0.01 milligrams of carotene, 0.1 milligrams of thiamine, 0.03 milligrams of riboflavin, 0.4 milligrams of nicotinic acid, 16 milligrams of ascorbic acid and 100 milligrams of anthocyanins. Black potatoes can be used as both side dishes and specialty dishes. Fried, fried, roasted, boiled, simmered, steamed, fried, etc., can be made into 500 dishes of delicious food with different shapes and shapes. In addition, it is rich in antioxidants, which can maintain the original natural color without adding pigment after high-temperature frying.

3. Cultivation points 1. Sprouting and slicing: 20 to 30 days before sowing, the selected seed potatoes were placed evenly under the environment of 20 ℃, properly sprayed with water and shaded with grass mulch. 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. The seed potato was sliced 1 ~ 2 days before sowing, and the weight of each seed potato was 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. Cut pieces with a knife must be strictly sterilized with 75% alcohol. 2. Soil preparation and sowing: black potato has a short growth period and needs more concentrated fertilizer, with 3 ~ 5 cubic meters of high-quality organic fertilizer, 20 kg of diammonium phosphate, 20 kg of urea and 10 kg of potassium sulfate per mu. Black potatoes should be sparse but not dense, ditching according to row spacing of 70 cm, ditch depth of 5 cm, and phoxim granules were applied to control underground pests such as ground tigers. The seedlings were sown according to the plant spacing of 25 cm ~ 30 cm, and about 3500 seedlings were preserved per mu. Suppress and straighten the ridge shape in time after sowing, and cover the plastic film after spraying herbicide. 3. Field management: after the seedlings are unearthed, the seedlings should be broken and released in time, and the seedling holes should be sealed tightly with wet top. When the seedlings are full, in order to promote the early emergence of seedlings, 800 times of chloroplast can be sprayed on the leaves for 2 ~ 3 times, and the buds should be removed in time during flowering. In order to improve the rate of large potato, 800 times of sweet fruit essence can be sprayed on the leaves for 2 ~ 3 times. 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 600x, and the control of aphids and ladybugs can be sprayed with 18% Lesbon 1000 times. 4. Timely harvest: timely harvest according to the market supply and marketing situation, harvest process to minimize mechanical damage, so as not to affect the quality of goods.