2 do ridge insertion
2.1 Soil preparation to do ridge purple sweet potato wide adaptability to the soil to achieve high yield, stable production generally choose loose soil fertile, sandy loam or loam with high organic matter is appropriate, using shallow ploughing, soil preparation do ridge, ridge height 30-35?, pylon distance 70-80?.
2.2 The timely cutting of purple sweet potato production has a significant positive correlation with its growth period, timely and early high-yield, improve fresh potato yield and starch content and quality, general cutting time from May 15 to June 10, cutting methods generally use oblique insertion Method, plant spacing 25-28?, 3000-3300 acres of cuttings.
2.3 After the cover film is transplanted and survived, it is covered with a mulching film to suppress weeds and increase the temperature of the soil. It also improves soil physical and chemical properties and enhances permeability.
3 Strengthen field management
3.1 1 Seedlings are planted and planted, and the plots of seedlings and dead seedlings must be promptly filled to ensure planting density. 2 scientific fertilizer, purple sweet potato fertilizer is mainly based fertilizer, under normal circumstances do not have to top-dressing, but depending on seedling growth can be applied to raise seedlings fertilizer urea 5-8 kg. 3 Timely irrigation and turning of vines, and entering the flood season from July to August, attention should be paid to the prevention of waterlogging. In general, combining weeds and vines for 3-4 times, it is advantageous to expand potato chips.
3.2 The scientific fertilization of purple sweet potato requires a large amount of potash fertilizer. To achieve high yield, the principle of fertilization that must be mastered is: increase organic fertilizer, combined with application of phosphorus and potassium fertilizers. Generally, 400-500 kg of refined organic fertilizer and 20-25 kg of ternary compound fertilizer and 10-15 kg of potassium sulfate are applied to the arable land. Shallow ploughing in the 10-15 tillage layer,
3.3 scientific management water purple sweet potato different water requirements at different stages of growth. When transplanting, the rooting water must be poured to facilitate survival. The water requirement in the early and late stages of growth is not large, and the soil water holding capacity should be maintained 60% to 70%; in the medium term, the growth period of stems and leaves is large, and also the expansion period of the tubers, and the water requirement is relatively large. The soil water retention capacity should be 70% to 80%. it is good. As there is more rain in the summer, the water in the fields tends to accumulate water. Pay attention to the drainage of the gutters and control the decay of the shucks.
3.4 Diseases and pests control The disease of purple sweet potato is mainly anthrax, which should be mainly prevention. In the early stage of outbreak, it should be treated with 70% grade thiophanate-methyl 600-800 times, and it should be prevented 2 or 3 times, once every 7-10 days. Insect pests are mainly earthworms and small-earth land. The control method is to use 3% of green land insects to clear 3-4 kilograms of soil per acre in the soil before excavation, and turn them over evenly.
4 When the potato leaves begin to turn yellow in November, they are harvested on sunny days and low soil moisture.
Hebei Abiding Co.Ltd, a professional food supplier, was established in 2005 in Shijiazhuang, China. We specialize ourselves in supplying Organic Tomato Paste and Organic Pasta. Conventional ones are also available to supply. We can make the private labels according to the customers' requirement. Our products have EU, NOP and JAS organic certificates. They are also Kosher certified. We have business relationships with importers and wholesalers from around the world, mainly in Europe and America. Over the years, we have earned highly recognition from clients due to our qualified service and steadily increase our market share year after year.
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