New method for high-yield sweet potato cultivation New technology for high-yield sweet potato cultivation and management yield

High-yield sweet potato cultivation is a cultivation measure that combines the effects of multiple technical measures, including seed potatoes, soil, fertilization, pest and disease control, stem and vine adjustment, timely harvesting, storage and processing, etc. Only by understanding the corresponding specifications can high yields be achieved.

Choose virus-free seed potatoes suitable for the local area

Only by choosing varieties suitable for local planting and with great yield potential can high yields be achieved. Virus-free seed potatoes are the best , which generally increase yields by more than 40% compared to conventional sweet potatoes . Such seed potatoes can reduce the yield and variety decline caused by the degradation of sweet potato virus diseases.

Choose a deep, loose soil

Generally, plots with a soil depth of more than 40 cm are selected for planting sweet potatoes , because loose sandy loam and loam help the root system to develop, retain water and fertilizer, and ensure the effective supply of water and nutrients.

Moreover, when cultivating in ridges, the soil layer can be thickened, the temperature difference between day and night can be increased, and drainage can be effectively achieved, thereby enabling the sweet potatoes to receive more natural light, which not only increases the yield but also the starch content.

Extending the growing period of sweet potatoes

There are many ways to extend the growing period of sweet potatoes, including early cultivation in greenhouses , early covering cultivation in small arch greenhouses , and mulch cultivation .

The most commonly used method is mulch cultivation , which can be cultivated 10-15 days in advance. Early seedlings, early rooting, early tuber formation, and early harvest. Generally, the yield of sweet potatoes cultivated in spring is more than 30% higher than that of sweet potatoes cultivated in stubble fields .

Planting sweet potatoes using flat planting method

Sweet potatoes have a well-developed root system, and they grow quickly and produce more potatoes in a loose and breathable environment. Change the previous deep planting and vertical planting habits, and adopt horizontal or oblique planting of sweet potatoes , so that each stem node can produce potatoes, thus achieving the goal of high yield .

In order to reduce the spread of sweet potato seedling diseases to the field, the sweet potato seedlings should be treated with chemicals. It is best to cut off the original roots and transplant them after rooting.

Apply more organic fertilizer and potassium fertilizer

Sweet potatoes like potassium fertilizer , and plots with high organic matter content have high yields and good quality. Therefore, before planting, apply more than 2,000 kg of well-rotted high-quality farmyard manure in holes or furrows. Then add 30-40 kg of triple compound fertilizer and 15-20 kg of potassium sulfate.

During the growth period of sweet potatoes, we can apply urea and potassium fertilizer according to the growth situation. In the later stage, spraying potassium dihydrogen phosphate, urea, growth regulators, etc. can increase production.

Trellis cultivation and sweet potato egg-laying cultivation

Practice has proved that trellis cultivation of sweet potatoes can effectively improve photosynthetic efficiency and increase yield . Using sweet potatoes to lay eggs can not only raise seedlings, but also obtain high yields, but the quality is poor, and it is suitable for feed cultivation and starch processing cultivation.