Autumn sweet potato is most suitable for seed potato, so it is especially important to choose excellent varieties. At present, the best varieties suitable for cultivation are: Nanshu 88, 868, Xiangshu No. 15, Xiangshu No. 16, and gold leaf. Reasonable close planting, ensuring full seedlings, planting vines, 4~5 knots per section. The density of planting is preferably 5000~6000 plants per mu, and the water is poured after planting to ensure survival. When planting, use 1500~2000 kg of decomposed pig cow dung and 15~20 kg of potash fertilizer as the base fertilizer. The autumn sweet potato is generally cultivated twice, and the first cultivating is carried out after the survival of the potato seedlings. The depth of the cultivating is about 7 cm. The cultivating is combined with the application of manure or quick-acting nitrogen fertilizer to promote the growth of the seedlings and early potato growth. The second cultivating was carried out about 20 days after the insertion, and the compound fertilizer was applied one time according to the growth of the potato seedlings. After the second cultivating, the soil should be cultivated and the ridges should be refurbished to prevent the potato from being exposed. In the case of long-term drought, autumn sweet potatoes should be irrigated 1 or 2 times. Where there is insufficient water source, more cultivating should be done, or more grass and organic fertilizer should be added. Irrigation should be carried out in the morning or in the evening. The depth of irrigation should be 2/3 of the ridge height, and the irrigation time should not exceed 4 hours. Once every 1 hour of irrigation, loosen the soil 1 time to prevent evaporation of water. The sweet potato stems and leaves are tender and susceptible to the damage of sweet potato Spodoptera litura, sweet potato hawk moth and golden flower worm. Handmade Soap,Natural Soaps,Handcrafted Soap,Artisanal Soap Guangzhou Lingxue Cosmetics Co., Ltd , https://www.lxgj188.com