How to plant autumn sweet potatoes?

How to plant autumn sweet potatoes? Please introduce that autumn sweet potato is the most suitable for seed potato, so it is particularly important to select good varieties. At present, the excellent varieties suitable for cultivation in our state are: Nanshu 88,868, Xiangshu 15, Xiangshu 16, Golden Leaf, Zijin Potato, Ys86, Ys13 and so on. Reasonable close planting, ensure the whole seedling, vetch vine planting, each section 4 murals 5 sections. The planting density should be 6000 plants per mu, and the planting density should be watered thoroughly after planting to ensure survival. When planting, 1500 kilograms of rotten pig and cow manure and 20 kilograms of potash fertilizer were used as base fertilizer per mu. Autumn sweet potato is generally intertilled twice, the first intertillage is carried out after the survival of sweet potato seedlings, the depth of intertillage is about 7 cm, combined with the application of mature human feces and urine or available nitrogen fertilizer (carbon ammonia 25 per mu 30 kg) to promote seedling growth and early tuber formation. The second intertillage was carried out about 20 days after planting, and compound fertilizer was applied once according to the growth of potato seedlings. After the second intertillage, the soil should be cultivated and the edge of the ridge should be renovated so as not to expose the potato pieces. In case of long-term drought, autumn sweet potatoes should be irrigated once or twice, and more ploughing should be done in areas with insufficient water sources, or more grass should be laid and organic fertilizers should be applied. Irrigation should be carried out in the morning or evening, the irrigation depth should reach the ridge height of 2x3, and the irrigation time should not exceed 4 hours. Loosen the soil once per irrigation to prevent water evaporation. The stems and leaves of autumn potato are tender and vulnerable to Spodoptera litura, Spodoptera litura and Golden Flower insect, which can be controlled by spraying. In order to prevent the vine from damaging the adventitious roots, reduce the nutrient absorption capacity and plant resistance, resulting in reduced yield, autumn sweet potato must not turn the vine. Click to get more sweet potato planting techniques click to get more vegetable planting techniques