甘薯翻蔓不可取在农村常见到在甘薯茎叶生长旺盛时有翻蔓的习惯。认为翻蔓可防止蔓上生根结小薯消耗养分，有利藤头下薯块肥大。但据试验证明，甘薯翻蔓均有不同程度减产，且减产程度随翻蔓次数增多而加重。翻蔓减产原因主要是由于翻蔓损伤了茎叶，并打乱了植株叶片的正常... Inverted sweet potato unworthy of the rural common in the sweet potato stems and leaves when the strong growth of the habit of turning vine. That turn over vine to prevent the root knot on the root of potato consumption of nutrients, beneficial tuber head tuber mastitis. However, according to the test proved that the sweet potato turn over all have different levels of yield reduction, and the degree of yield reduction with the increase in the number of Man increase aggravate. Turnover is mainly due to vine damage caused by stems and leaves, and disrupted the normal plant leaves ...