Promote planting purple sweet potato to strengthen field management

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Purple sweet potato is also called black potato, and the potato is purple to dark purple. The taste is delicate and sweet, and the flavor is rich. Strong germination, many branches, thick and strong, up to 1 meter long, not prosperous, semi-erect. In addition to the nutrients of ordinary sweet potatoes, it is also rich in selenium and anthocyanins. Known as the seventh most important nutrient after water, protein, fat, carbohydrates, vitamins and minerals. Strong disease resistance, single potato can reach more than 10 kg, the largest single potato weighs 5.7 kg, and the average yield per mu can reach 3,000 kg. Therefore, purple sweet potato is rich in nutrients, high in planting efficiency and wide in market prospects.

In order to increase the yield of purple sweet potato, stabilize the purple potato with less virus in the growing season, promote the rapid growth of purple sweet potato seedlings after transplanting, increase the yield of potato chips, and avoid the possibility of small and deformed potato chips, even without growing potatoes. The root system, yield and quality are seriously degraded. On the basis of increasing potassium fertilizer, the following formula should be used to spray the mixture to increase the yield:

1. Mixed liquid formula: spray a mixture of 20 grams of Qi Nongsu 2 bags, 15 grams of agricultural streptomycin 1 bag, 8 grams of imidacloprid 1 bag, 100 grams of vinegar, and 60 kg of water to reduce the spray. Pests and diseases make the potato pieces grow and smooth, and increase the yield, thereby preventing chlorotic spots, mosaic leaves, curling leaves, shrinkage, yellowing, cracking of potato chips, and insects.

2. Spraying method and application time: The first time after spraying 10 days, the spray can be sprayed once after 20 days. Do not use for 20 days before digging.

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