Black peanut seeds are oblong and purple-black, and are nutritious and health-care peanut varieties. The growth period is about 130 days, and the big fruit type has a weight of about 250 grams. Spring can also be sowed in summer. Specific planting techniques are as follows:
1. Lot selection. Suitable for pH 5.5 ~ 7.2, sandy soil with deep soil layer, live layer and good drainage.
2. Cultivation time. When 5 cm soil temperature is stable above 15 °C, it can be sown. Generally from early March to early May.
3. Seed treatment. Before sowing, use “Biological†nutrition solution to soak 15 kg of water for 3 hours and disinfect seeds with 50 grams of dimethoate. With 40% to 50% of carbendazim 150 to 250 grams of seed dressing 50 kg can prevent stem rot.
4. Planting methods. Drilling, spacing 30 cm. Cave sowing, spring planting density 9000 holes, line spacing 39 cm 18 cm. Summer sowing mu density 11,000 points, line spacing 35 cm 16 cm, sowing 2 seeds per hole.
5. Reasonable fertilization. The end of the application of biological fermentation compost 2000 kg of urea, 10 kg of urea, phosphate 35 kg, 30 kg of potassium sulfate, 0.5 kg of boron fertilizer, 1 kg of zinc fertilizer. 3 to 4 leaf stage spraying chlormequat (according to the instructions), spray once every 7 days, and even spray 3 times. In the early flowering period, each special nutrient solution was sprayed with 15 kilograms of water, sprayed once every 10 days, and even sprayed three times. During the flowering period, the base of the plants was covered with soil so that the roots would not be excavated, and the nutrient solution was sprayed after 7 days.
6. Weeding. Before sowing Mu 50% acetochlor EC 75 ml water 100 ~ 150 kg spraying ground. 2 to 3 leaf-leaf mu is sprayed with Gaec 800 to 1000 times the ground, and then manual weeding.
7. Pest control. At the seedling stage, 5% Jinggangmycin can be sprayed to prevent and treat bacterial blight. For virus-infected aphids, when the ramie strain rate reaches 5% to 10%, it is sprayed with 10% imidacloprid wettable powder 3000 times solution or 40% dimethoate emulsion 1000-1500 times solution. For brown spot, black spot, anthracnose, etc., 50% carbendazim WP 1000 times solution or 80% mancozeb WP 500 times solution at the beginning of the disease, spray once every 7-10 days. , spray three times. When the leaves turn yellow during the growth period, the roots should be promptly inspected and root rot should be found. Mu 50 gram of root rot should be sprayed 3 to 5 times for 15 kilograms of water. Prevent and treat ants, use potash powder and base fertilizer together.
8. Field management. Peanuts need more water in their needles and in the weeding stage, and they should be watered in case of drought. Pay attention to drainage during the rainy season, especially to prevent waterlogging during the harvest period to prevent rotten fruit.
9. Appropriate harvest. Black peanuts are poorly ripened, and the lower leaves of the plants are normally shed, and the seed coats are harvested in pink to reduce the rot. Dried in time after harvest to prevent mildew.
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