1、 Seedling raising time

The seedling raising period of potato is generally from April to May. At this time, the temperature is not very high, which is conducive to the growth of seedlings. At the same time, the light is also sufficient, and the temperature is between 15-20 ℃. If the climate is different, the seedling raising time can also be postponed

2、 How to raise seedlings

1. Seed potato selection: potato seldom propagates with seeds, but chooses seed potato, that is, its massive root. Select some seed potatoes without diseases and pests and damage on the surface, weighing between 100-250g

2. Planting: potato is generally planted on a large scale, and the distance between each kind of potato is about 3cm. After it is arranged, cover it with a layer of soil of 2-3cm. The soil should not be too thick to avoid affecting seedling emergence

3. Heat preservation measures: according to different varieties of potato, the heat preservation measures are also different. Early maturing varieties are insulated with three layers of greenhouse, small arch shed and plastic film, while conventional varieties are insulated with two layers of small arch shed and plastic film. Remove the plastic film after emergence to avoid affecting the growth of seedlings

4. Maintain ventilation: when the temperature is above 20 ℃, strengthen the ventilation of the greenhouse to avoid burning seedlings due to too high temperature. At the same time, after the soil is dry, it should be watered in time to ensure the humidity of the environment