1.摘心　不论是主蔓还是分枝蔓,只要长到1米长时,都要及时摘心,减少养分消耗。2.喷多效唑　每亩用多效唑25克,叶面喷雾,7天后喷1次,连续喷2次,可有效地防止薯蔓徒长,使薯蔓节间缩短,增粗,叶片肥大,制造更多的养分,供应薯块膨大。3.喷糖精　红瓤红薯以口感好、甜度高深受广大食 1. Topping Whether the main vine or branch vine, as long as the length of 1 meter long, must promptly topping, reduce nutrient consumption. 2. Paclobutrazol per mu with paclobutrazol 25 grams, foliar spray, spray 1 day after 7 days, spray 2 times in a row, which can effectively prevent the potato Manniu long, shorten the potato vines to between, thicker, leaf hypertrophy, to create more The nutrients, supply tubers expand. 3. Spray sweet red 瓤 sweet potato to taste good, high sweetness by the majority of food