Black purple potato
Potato shape was long oval, bud eye smaller. The skin is dark purple. Rich in luster, the flesh is dark purple. The starch content of the pulp is as high as 13%~15%, and the taste is good and the quality is excellent. According to the determination: every 100 grams of black purple potato contains protein 2.3 grams, fat 0.1 grams, carbohydrates 16.5 grams, calcium 11 mg, iron 1.20 mg, phosphorus 64 mg, potassium 342 mg, magnesium 22.9 mg, carotene 0.01 mg, thiamine 0.1 mg, riboflavin 0.03 mg, nicotinic acid 16 mg. In addition, the variety is rich in anthocyanins, anthocyanins in addition to carcinogenic substances have inhibitory effect, but also can enhance human immunity, delay aging, enhance physical fitness, enhance vision. Black Purple Brand Black Purple Potato won the Best Selling Product Award of the Fifth Green Food@#@119@#@in China on September 1, 2005.
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Sweet potatoes cannot be mixed with potatoes
Sweet potato can not be mixed with potato for two reasons: sweet potato is a heat-loving crop with different temperature during cellar period. Sweet potato is planted in summer and early autumn with high temperature, and the optimum temperature in cellar period is 10 ℃ ~ 15 ℃. If the temperature is too low, it will be damaged by cold and "hard heart" rot will occur in serious cases. Potato is a cold-loving crop, which is planted in early spring and late autumn with low temperature. The optimum temperature in cellar period is 1 ℃ ~ 5 ℃. If the temperature is too high, it will sprout and turn green and poisonous and inedible. During the cellar storage period, different ventilation and light transmittance are required. Sweet potatoes are stored in root tubers and called when they are stored in winter.
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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. There are 6 ~ 8 tubers per plant.
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