With the rise of agricultural and sightseeing harvesting agriculture in the park, the demand for special potato varieties is gradually increasing. Black potato is a new variety of colored potatoes that combines nutrition, health care and appreciation. In addition to the fine quality, fragrance and good quality. There is also a unique appearance with bright color, which has the effects of preventing cancer and beauty. The cultivation area of ​​black potato in China is still small, the price per kilogram is about 10 yuan, which is 6-8 times that of ordinary potato. The market is good, and its economic benefits are considerable.
Black potato planting points are as follows: germination and dicing. The selected seed potatoes were placed evenly under the environment of 20 °C 20-30 days before sowing, and the water was properly sprayed and shaded with grass. When the young buds grow to the size of the soybean granules, the seed potatoes are placed in a warm sunny place to make the seedlings green and germinated. The seed potatoes are cut into pieces 1-2 days before sowing, and the weight of each seed potato is about 25 grams. The small pieces of seed potatoes are cut vertically, and each piece must have a top bud; the large seed potatoes are cut from the tail, and the weak buds are eliminated. The buds are arranged in the order of the buds, and the top is divided into two. The dicing knife must be strictly disinfected with 75% alcohol.
Sowing on the ground. The black potato has a shorter growth period and requires more fertilizer. It applies 3-5 cubic meters of high-quality organic fertilizer per acre, 20 kilograms of diammonium phosphate, 20 kilograms of urea, and 10 kilograms of potassium sulfate. After fertilization, the soil is deeply cultivated. The black potato planting should be thin and should not be dense. The ditch should be ditched by 70 cm and the ditch should be 5 cm. When the ditch is used, phoxim granules should be applied to control underground pests such as tigers. Sowing at a plant spacing of 25-30 cm, with about 3,500 seedlings per acre. After sowing, it is timely pressed and ridged, and the herbicide is sprayed to cover the mulch.
Field management. After the seedlings are unearthed, it is necessary to break the membrane and release the seedlings in time, and seal the seedling holes with wet soil. When the seedlings are out, in order to promote the early emergence of the seedlings, the leaves can be sprayed with the fruit of the fruit; during the flowering period, the flower buds are removed in time. In order to increase the rate of large potatoes, the leaves can be sprayed with fruit and fruit. The main disease of black potatoes is late blight, and the pests are aphids and ladybugs. The control of late blight can be sprayed with 64% anti-virus 矾 600 times liquid + new high-fat film; the control mites and ladybugs can be sprayed with 18% lass 1000 times liquid + new high-fat film.
Harvest at the right time. Plan the harvest at the right time, minimize mechanical damage during the harvest, so as not to affect the quality of the goods.
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