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Sweet potato seedling raising time, method and temperature

The time for raising sweet potato seedlings is from mid-February to mid-April. The seedling raising methods include open field seedlings and protected field seedlings. The seedling raising temperature is 16 to 35 degrees Celsius.

1. Sweet potato seedling cultivation time

The cultivation time of sweet potato seedlings depends on the planting area and climate. Usually, the cultivation time is concentrated around March. When cultivating in spring, it is generally Around the time of the Waking of Insects, cultivation can begin in February in the southern region, and cultivation should be completed before the Qingming Festival in the northern region.

2. Sweet potato seedling cultivation method

Open field seedling cultivation is a relatively traditional method of cultivating seedlings. It is mainly cultivated according to local natural conditions. It does not need to take too many protective measures, as long as it ensures Just keep the temperature above 16 degrees Celsius. Carry out deep plowing on the selected seedbed, apply enough base fertilizer, make a trench with a width of 1.5 meters and a depth of 20 to 30 centimeters, and then arrange the seed potatoes to cover the soil.

Protected land seedling cultivation is to artificially use some insulation measures to create conditions for cultivating sweet potato seedlings in seasons that are not suitable for the growth of potato seedlings. Protected area nursery can greatly advance the seedling nursery time and extend the effective growth period of sweet potatoes. Thereby increasing the yield of sweet potatoes. Protected land seedlings can be divided into three types: seedlings covered with insulation film, seedlings raised in solar or bioheated hotbeds, and seedlings raised in electric hotbeds.

3. Seedling cultivation temperature

The temperature required for sweet potato germination is above 16 degrees Celsius. The most suitable temperature for seedling cultivation is 16 to 35 degrees Celsius, and the higher the temperature, the faster the germination. Temperature is a key factor in the sweet potato seedling raising process.

Preparation work before seedling raising

When selecting land, it should be leeward and sunny, with higher terrain, good drainage, close to water sources, fertile soil, and land that has not been planted with sweet potatoes in at least two years. If the sweet potato seedbed is fixed, it must be strictly disinfected and the bed soil replaced before use to reduce the spread of pests and diseases.

A good seed potato can cultivate strong potato seedlings that are suitable for growth in the region. High-quality varieties are the first choice. Autumn or summer potatoes of medium size weighing between 150 and 200 grams, with bright and smooth skin and neat and well-proportioned pieces.