Sweet potato planting: how to grow autumn sweet potato?

How to grow autumn sweet potatoes? Please give guidance on planting methods for planting autumn sweet potato can refer to the following methods: autumn sweet potato is the most suitable for seed potato, so it is particularly important to select good varieties. At present, the better varieties suitable for cultivation are: Nanshu 88, 868, Xiangshu 15, Xiangshu 16, Jinye and so on. Reasonable close planting, ensure the whole seedling, vetch vine planting, each section 4-5 nodes. The planting density should be 5000-6000 plants per mu, and water should be watered thoroughly after planting to ensure survival. When planting, 15002000 kg of rotten pig and cow manure and 15kg / mu of potash fertilizer were used as base fertilizer. Autumn sweet potato is generally intertilled twice, the first intertillage is carried out after the survival of potato seedlings, the depth of intertillage is about 7 cm, combined with the application of mature human feces and urine or available nitrogen fertilizer 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. Click to get more sweet potato planting techniques click to get more vegetable planting techniques