How to grow vegetable sweet potatoes?

How to grow vegetable sweet potatoes? Please guide the planting techniques of vegetable sweet potato as follows: 1. Raising seedlings: seedlings can be raised in hotbed or covered with plastic film on the ground. Open field mulching seedlings are generally sown in late March, and the seedbed should choose a plot with leeward to the sun and fertile soil, which should be separated by 2 meters wide, and the sowing ditch should be opened by 0.6 meters wide on the box surface, and used after sowing: soil miscellaneous fertilizer cover seeds to cultivate the native land, cover the film after rain or water thoroughly, uncover the film after emergence, ploughing and weeding in time, and apply 15 kg urea per mu to lift seedlings. Double rows with high ridges, timely early insertion and reasonable close planting. Sweet potato growth needs deep soil, the field should ridge cultivation, ridge specification for ridge width of 1 meter (including trench), ridge height of 33-40 cm, ridge width of 40-50 cm, hole in the ridge, planting double rows. It should be planted early at the right time, and can be planted in the middle and middle of May in the middle and lower reaches of the Yangtze River, and the planting density should be 4000 plants per mu. 2. Rational fertilization: fertilization is mainly based on base fertilizer, which should be concentrated in holes. In dry and thin land with low fertility, the amount of fertilizer must be increased, generally 100 kg per mu of vegetable wilt and 50 kg of compound fertilizer per mu. In order to promote the rapid growth of potato seedlings, 15 kg urea or available farm manure was applied per mu 20 days and 60 days after potato seedlings survived, respectively. 3. Strengthen field management: 1-2 times of interploughing and soil cultivation are generally carried out from 15 days after planting to before ridge sealing, the first ploughing depth is generally deep, and then the depth is shallow, the ridge surface is shallow and the ridge waist is deep, and the ridge foot should be loosened and solid soil, that is, the so-called "upper shallow" waist depth, foot breaking soil ", during the growth period, weeds should be pulled out and diseases and insect pests should be prevented and irrigated in case of drought. Two days after picking the stem tip, quick-acting fertilizer was applied to water. 4. Timely harvest and safe storage: generally, underground potato pieces are harvested from late October to early November. In order to obtain more potato pieces, the times of picking stem tips should be reduced, and stem tips and irrigation should be stopped 40 days before harvest. The harvest should be carried out on a sunny day, and attention should be paid to ventilation and heat preservation during potato storage, and the pit temperature should be kept at 10-15 ℃ in winter. Potted: Xiangcaishu No. 1 can be potted, and urban residents plant 3-4 pots on the balcony or in the courtyard, where you can not only enjoy the lovely green and the vitality of sweet potato growth, but also eat the pistachio planted by yourself at any time. The main results are as follows: 1. Pot method: select a flowerpot with a diameter of 27 cm and a height of 20 cm, use fire soil ash and pig manure residue as nutritious soil, apply 150 grams of compound fertilizer in each pot as base fertilizer, plant 4-5 potato seedlings evenly in each pot after soil loading, water, loosen the soil and fertilize at the right time after planting, and the stem tip can be picked 20 days later. Generally, each pot can pick 15 stem tips, weighing about 50 grams, and can be picked every 10 days or so. 2. Picking method: the stem tip can be picked 40 days after potato seedlings are planted in the field, and the stem tip can be picked directly with scissors or by hand. the suitable length of stem tip is 9-15 cm, and the number of leaves fully expanded is 4-6 leaves. The picking interval is 10-15 days. Click to get more sweet potato planting techniques click to get more vegetable planting techniques