Do sweet potatoes need to turn over vines?

Do sweet potatoes need to turn over vines? Please introduce it to netizens to prove that if the sweet potato (sweet potato, sweet potato) does not turn the vine during the growth period, it can increase the yield by about 25%, and some even as high as 30%. The main reason for the reduction of sweet potato yield is: damage to rattan leaves. Practice has proved that every time you turn the vine, 667 square meters will break the vine about 10 kilograms. If you turn the seedling after overcast and rain, it is easier to break the vine because of the sufficient moisture. In addition, after turning the vine, the leaves were artificially stacked, which affected the photosynthesis, resulting in serious yellowing, dead vines, shedding and other phenomena. Affect the growth of underground potato cubes. After turning the vine, the roots twisted seriously, some of the small roots were broken, and even the whole plant was broken, resulting in few tubers, or even completely "rooting". According to the experimental statistics in 2005, in the experimental field of 0.13 hectares, the average caking per plant was 2.7 and the weight was 0.34 kg for those who had turned vines for 4 times, while for those who had not plucked vines, the average caking per plant was 3.8, the weight was 0.56 kg, and the yield was increased by 348 kg per 667 square meters. Affect photosynthesis. Turning the vine also causes the stem and leaf to invert, disrupting the original ingenious natural distribution of crop leaves. It takes 5 to 7 days for the stem and leaf to return to normal growth, which will affect the growth of potato. Resulting in a cluster of new branches, consuming a lot of nutrients. The lumbar root without turning the vine is many and deep, the root system absorbs more nutrients, the seedling vine is stout, the leaf is thick, the photosynthesis is good, the drought resistance is strong, and the waist root forms some tubers, which can promote the growth of sweet potato. Click to get more sweet potato planting techniques click to get more vegetable planting techniques