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红薯茎叶封垄后,正是高温多雨季节,茎节常常会生出大量的不定根,甚至结成小著,消耗大量养分,严重影响产量。封垄后每隔15天～20天,将主藤和分枝轻轻提高地面9厘米～10厘米再放回原处,既可避免翻藤损伤茎叶的缺陷,又能解决不定根和小薯消耗养分的问题。同时,配合提蔓追施钾肥,能显著提高红薯产量和大薯比重。
After sealing the ridge of sweet potato stems and leaves, it is high temperature and rainy season, stem nodes often produce a large number of adventitious roots, and even formed a small, consume a lot of nutrients, seriously affecting the yield. After sealing the ridge every 15 days to 20 days, the main vine and branches gently raise the ground 9 cm to 10 cm and then put back to the original place, both to avoid the damage of the stems and leaves of toothed injury, but also to solve the adventitious root and potato consumption Nutrient problems. At the same time, with Man mention topdressing potash fertilizer, can significantly improve the sweet potato yield and the proportion of large potatoes.