Sweet potato planting: how to fatten it in the later stage of planting sweet potato?

How to fatten up in the later stage of growing sweet potatoes? Please guide the fertilization method of sweet potato in the later growth stage, reasonable fertilization can prevent plant premature senescence, maintain the assimilation ability of leaves, promote the transport of nutrients to the root tuber, so as to increase the yield. After foliar spraying sweet potato entered the later growth stage, the absorption capacity of root system weakened, which can be classified as foliar spraying. 0.5% urea can be sprayed on weak hilly slopes, plain sandy lands or fields with a tendency of premature senescence; 0.2% potassium dihydrogen phosphate solution or 2%-3% calcium superphosphate leaching solution can be sprayed on fields with strong growth and high fertility level. A mixture of 0.4% 0.5% urea and potassium dihydrogen phosphate can be sprayed on general fields, once every 7 to 10 days, for a total of 2 times, each time 70 kilograms per mu of fertilizer is sprayed, and the appropriate spraying time is sunny evening. The fertilizer-water irrigation seam was applied along the ridge with 3%-5% potassium sulfate solution or 10%-20% plant ash leaching solution, with 100kg fertilizer solution per mu. For fields with a tendency of premature senescence, 2% ternary compound fertilizer solution can be used. Click to get more sweet potato planting techniques click to get more vegetable planting techniques