实践经验证明 ,采用薯藤倒栽法 ,可防止甘薯藤叶生长过旺而大量消耗有机养分 ,影响薯块膨大和降低产量。据试验 ,采取薯藤倒栽法比常规的薯藤顺插法大幅度增产。具体方法如下 :剪取经过育苗提纯的薯藤 2节 (节间密的取 3节 ) ,并把第一节或第二节的叶片连同叶柄一起剪去 ,然后 Practical experience shows that the use of potato vines lawn, to prevent excessive growth of sweet potato vine leaves and consume a large number of organic nutrients, affecting tuber expansion and reduce production. According to the test, taking the method of potato vine transplanting than the conventional potato rattan Shun interpolation method greatly increased production. The specific methods are as follows: Cut the seedlings purified seedling 2 (internode dense take 3), and the first or second leaf together with petiole together, and then