The necessary conditions for seed germination are moisture, air, temperature, and light.
1. Moisture and air: Determine the amount of water in the germination bed according to the characteristics of the germination bed and seeds. If the sand bed is filled with water to 60%-80% of its saturated moisture content, such as a paper bed, absorb enough water to drain the excess water. If soil is used as a germination bed, add water to hold the soil and stick it into a group, then finger It is advisable to break it gently. The germinating bed must always be kept moist during germination, and sufficient air should be provided around the seeds during germination.
2. Temperature: When the temperature is appropriate, the seed germinates normally, and the temperature is too high or too low to have a negative effect on the seed germination. Different crops require different temperatures for seed germination. Normal summer crops require 20-30°C temperature for seed germination, and winter crop seeds require 20-25°C.
3. Light: The seeds of most crops can germinate under light or dark conditions, but light is generally used. If germination occurs at variable temperature, light should be conducted at an elevated temperature of 8 hours.
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