红薯是一种长叶发根能力很强的作物,因此,当红薯进入块根膨大期后,应控制茎叶的生长速度,避免“节外生枝”,促进养分向块根转移,以夺取高产。 过去采用的翻藤方法,虽在一定程度上起到了控上促上的目的,但它对促下没有帮 Sweet potato is a long-leaf hair root ability of crops, therefore, when the sweet potato into the tuberous bulging period, should control the growth rate of stems and leaves, to avoid “section outside branches” and promote the transfer of nutrients to the roots to capture high yield. In the past, the method of turning over vines played a role of controlling and promoting to a certain extent, but it did not help promote