How to grow sweet potatoes for vegetable use? Master the methods to grow them well
How to grow sweet potatoes for vegetable use well? Please guide the sweet potato vegetable growing techniques as follows: 1. Raising seedlings: hotbed seedling raising or open-field film-covered seedling raising can be used. Open-field film-covered seedling raising is generally sown in late March. The seedbed should be chosen as a plot sheltered from the wind and facing the sun with fertile soil, divided into beds 2 m wide, and on the bed surface open sowing furrows 0.6 m wide...
How to grow sweet potatoes for vegetable use well? Please guide
The sweet potato vegetable growing techniques are as follows:
1. Raising seedlings: hotbed seedling raising or open-field film-covered seedling raising can be used. Open-field film-covered seedling raising is generally sown in late March. The seedbed should be chosen as a plot sheltered from the wind and facing the sun with fertile soil, divided into beds 2 m wide, and on the bed surface open sowing furrows 0.6 m wide. After sowing, cover the seed with farmyard manure and then earth up with local soil. After rain or after watering thoroughly, cover with film. After the seedlings emerge, remove the film, carry out timely intertillage and weeding, and apply 15 kg of urea per mu as a topdressing to promote seedling growth. High ridges with double rows, timely early planting, and rational close planting. Sweet potato growth requires deep soil, so the field should be ridged. The ridge specification is a ridge width of 1 m (including the furrow), a ridge height of 33-40 cm, and a ridge surface width of 40-50 cm. Open holes on the ridge and plant double rows. Planting should be done timely and early; in the middle and lower reaches of the Yangtze River, planting can be done in early to mid-May, and a planting density of 4000 plants per mu is suitable.
2. Rational fertilization: fertilization should be mainly basal fertilizer, and the basal fertilizer should be applied in concentrated holes. In mountainous dry and thin lands with low fertility, the amount of fertilizer must be increased. Generally, apply 100 kg of rapeseed cake and 50 kg of compound fertilizer per mu. At 20 days and 60 days after the sweet potato seedlings survive, apply 15 kg of urea per mu or quick-acting farmyard manure as a topdressing to promote rapid growth of the sweet potato seedlings.
3. Strengthen field management: from 15 days after planting to before the rows close, generally carry out 1-2 times of intertillage and earthing up. The depth of intertillage should generally be deep the first time, and gradually shallower afterward. The ridge surface should be shallow, the ridge side should be deep, and at the ridge foot the compacted soil should be loosened by hoeing, which is the so-called "shallow on top, deep on the side, breaking soil at the foot." During the growth period, weeds should be pulled out promptly and pests and diseases prevented and controlled. In case of drought, irrigate to resist drought. Two days after each harvest of stem tips, quick-acting fertilizer dissolved in water should also be applied.
4. Timely harvest and safe storage: generally harvest and dig the underground tuberous roots from late October to early November. If more tuberous roots are to be obtained, the number of stem tip harvests should be reduced, and stem tip harvesting and irrigation should be stopped 40 days before harvest. Harvesting should be done on sunny days. During the storage period of the tuberous roots, attention should be paid to ventilation and heat preservation, and in winter the cellar temperature should be kept at 10-15°C.
Pot cultivation: Xiangcai Shu No. 1 can be grown in pots. Urban residents can plant 3-4 pots on a balcony or in a courtyard, which not only allows them to enjoy the lovely green color and the vigorous vitality of the growing vegetable sweet potato, but also allows them to eat safe vegetables they have grown themselves at any time. 1. Pot cultivation method: choose flower pots with a diameter of 27 cm and a height of 20 cm, use burnt soil ash plus pig manure residue as nutrient soil, apply 150 g of compound fertilizer per pot as basal fertilizer, and after filling with soil, evenly plant 4-5 sweet potato seedlings per pot. After planting, water, loosen the soil, and fertilize in a timely manner, and after 20 days the stem tips can be harvested. Generally, 15 stem tips can be harvested per pot each time, weighing about 50 g, and harvesting can be done about once every 10 days. 2. Harvesting method: in the field, harvesting of stem tips can begin 40 days after the sweet potato seedlings are planted and survive. Harvesting can be done with scissors or directly by hand. The suitable length of stem tips for harvesting is 9-15 cm, and the number of fully unfolded leaves on the stem tips is 4-6 leaves. The harvesting interval is 10-15 days.
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