The method is usually to cover it directly on the ground, but the net should be removed in a timely manner after emergence to avoid hindering the growth of seedlings.
The main purpose of covering after sowing is to maintain soil moisture and prevent soil hardening after rainstorm.
Covered inside the greenhouse, usually not covered at a height of 1-1.5 meters from the ground.
Covering around the perimeter of the shed, commonly used for insulation at night in early spring.
Celery should be covered with a net all day before emergence, and after emergence, the net should be opened at both ends in the morning and evening to see light.
When the sunlight is strong at noon, the net should be covered. It can be left uncovered all day in cloudy days, but the net must be covered in time before rainstorm.
When single mesh and mesh are combined for coverage, the sides of the greenhouse are generally suspended about 1 meter above the ground and not covered.
Greenhouse cover, which can be divided into single net cover, mesh combined cover, outer perimeter cover, and inner greenhouse cover.
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