在甘薯生长期,人们在雨后都有翻蔓的习惯,认为翻蔓有抑制茎叶生长,减少茎叶所消耗的养料,促使茎叶的养份向块根输送,防止蔓节生长纤维根和结小薯,影响块根膨大,曝晒垄土,调节土壤适当的温度、湿度和空气。殊不知翻蔓是甘薯减产徒劳无益的措施。其主要原因是:一、翻蔓伤害茎叶:甘薯叶片是光合 In the sweet potato growth period, people have the habit of turning over after the rain, that turn over the vine have inhibited the growth of stems and leaves to reduce the nutrients consumed by the stems and leaves to promote stem and leaf nutrients to the root delivery, to prevent the growth of the fiber root and Knot small potato, affecting the root tuberosity expansion, exposure ridge soil, adjust the soil proper temperature, humidity and air. Do not know turn vine is a futile reduction of sweet potato measures. The main reason is: First, turn over damage stems and leaves: sweet potato leaves are photosynthetic