What kinds of sweet potatoes do you have? What are the methods of raising seedlings?

Sweet potato, also known as sweet potato, is a kind of fruit and vegetable, which tastes crisp and has a great taste of soup. Now many areas have grown sweet potato, now spring is coming, it is time for sweet potato planting and breeding season, but do you know where to sell sweet potato seeds? What varieties do you have? What are the methods of raising seedlings? Let's get to know it.

What kinds of sweet potatoes do you have?

Sweet potato seeds are sold in many areas, such as agricultural capital stores, local farmers' markets, and the Internet. According to the root shape, sweet potato varieties can be divided into flat round, flat ball, spindle (or conical) and so on. According to the mature stage, it can be divided into early maturing and late maturing species.

1. Early-maturing varieties

The growth potential of the plant is medium, the leaf is smaller, the root expands earlier, and the growth period is shorter. The root of the tuber is flat, round or fusiform, with thin skin and few fibers. At present, the varieties used are: Huangping sweet potato in Guizhou, Sichuan Suining sweet potato, Chengdu Muma mountain sweet potato, Taiwan Malay species, Guangdong Shunde kudzu and so on.

2. Late-maturing varieties

The growth potential of the plant is strong, the growth period is long, and the root tuber matures later. The root is flat, spindle-shaped or conical, with thicker skin, more fiber, high starch content and less moisture. The commonly used varieties are: big kudzu in Zhanjiang, Guangdong, Chi Sha Kudzu in the suburb of Guangzhou, conical species in Taiwan and so on.

What are the methods of raising sweet potato seedlings?

1. Accelerating budding

Sweet potato seeds are hard, dry seeds germinate slowly but not neatly, and sprouting is often used in production. Seeds should be carefully selected before budding, and seeds that are old, full and fresh should be selected. Soak the seeds for 10 hours for 12 hours before sprouting, soak them in a 25: 28 ℃ incubator and rinse them once a day. After 4-5 days, the germinated seeds are sowed and sowed in 2-3 times.

2. Sowing seeds

Sweet potato is generally used for direct seeding, and the sowing methods can be divided into two types: climbing planting and stent planting. Generally, the row spacing is 50 cm, the plant spacing is 33 cm, and each hole is planted with 2 seeds. The frame planting adopts deep trench and high border, the height of the border is 20cm 25 cm, the width of the furrow is 50 cm, the surface of the border is 90 cm, 2 rows are planted on each border, the spacing between rows is 50 cm, the distance between plants is 33 cm, and 3 seeds are planted in each hole. Seedlings can emerge 15 days after sowing.

3. Replenish seedlings with inter-seedlings

The seedlings were unearthed 15 days after sowing. After the first pair of basal leaves appeared, the seedlings were interspersed and replenished, and 1 seedling was left in each hole, and finally 1 seedling was fixed. The seedlings should be replenished in time, and the seedlings should be transplanted with soil masses on a cloudy day.

4. Ploughing and weeding

Sweet potato in the seedling height of 7 cm to the side of the vine before the weeding, ploughing should be shallow, do not hurt the root, when ploughing can cultivate soil 4cm 7 cm, lest the fleshy root exposed outside the soil, the color becomes green, the quality becomes bad, but also do not cultivate the soil too deep, the root is easy to show long shape.

5. Water and fertilizer management

Sweet potato seedlings should loosen the soil and topdressing in time, each time loosen the soil, irrigate human feces and urine to promote its early development, and re-apply topdressing when the root expands in the first and middle of June. In case of drought, we should pay attention to watering. Drainage should be carried out in time in case of heavy rain.

6. Beating flowers and picking hearts

Sweet potato begins to draw inflorescences in 5-6 nodes, and then with the elongation of the vine, almost every node inflorescence, if it blossoms, the pods are wasted and nutrients are wasted, and the roots are not easy to be hypertrophic. Therefore, in addition to those who want to keep the seeds, as soon as the inflorescence occurs, it should be cut off immediately and the leaves should be retained for photosynthesis, up to 2-3 times. Pick the heart at the 1824 leaves of the main vine. After picking the heart, the vine stops growing.

7. Pruning and framing

When the sweet potato seedlings grow to 30 cm high, insert a small mangosteen or cotton stalk in each hole, build a herringbone frame, tie the adjacent sweet potato seedlings together and let the vines climb onto the shelf.

The above is about the introduction of sweet potato varieties and seedling planting methods. In order to grow high-quality and high-yield sweet potatoes, we must understand the selection of varieties and their seedling techniques. As long as we follow the steps introduced in this article, sweet potatoes must be big and sweet.

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