1, the temperature
Management is the key to cultivating strong seedling bed temperature.In order to early emergence, emergence and tidy, seedbed to maintaining high temperature before emergence.Before emergence is generally not the fresh to tight heat preservation of seedling bed, the bed to 30 ℃ above the temperature increased, and the Mark Twain reaches more than 25 ℃.Pepper seedlings after out, according to the temperature conditions in a timely manner snort seedlings.Cotyledons flat, bed temperature can be controlled in 23 ~ 24 ℃ during the day, night can be controlled in 14 ~ 15 ℃.Pay special attention to prevent high temperature baking miao, generally seedbed middle surface ground temperature 30 ℃, should be immediately fresh air cooling.Minimum temperature dropped below 3 ℃ at night without CaoShan heat preservation.As temperatures rise gradually increasing air flow, prolonged snort.2 heart leaves 1 to 4 leaves 1 heart is the most easy to moderate growth of seedling period, at this time is in early April and the middle of the outside air temperature rebounded significantly, except for thinning in time, increase the nutrition area, due to lower temperature.Keep in 20 ~ 25 ℃ during the day, night at 15 to 17 ℃, keep the Mark Twain at 17 ~ 20 ℃.In late April to break films [1] is uncovered after the frost.
2, snort platoon is wet
Seedbed regulate humidity measures mainly fresh strength, good seedling emergence seedbed to gradually after the ventilation, with the growth of seedlings and the weather gets warmer, put air volume to increase the seedbed, prolonged snort.To prevent the seedbed of circulating temperature dramatically changes, so as to avoid the seedlings suffered from cold.Snort should pay special attention to don't flash miao, fresh mouth should be located in the top of the cold frame, little tunnel in the leeward side opening tuyere.Seedbed air humidity in pepper seedlings not only easy to disease, and lower transpiration, affect the absorption of moisture and nutrients.Therefore, to use risk control system of seedbed air humidity.After the water will immediately snort platoon is wet.Early spring even bed temperature is not high, if the humidity is too large, also need to snort, platoon is wet.Snort platoon is wet to insulation, give attention to two or morethings to noon in sunny day, on the premise of seedlings from freezing injury.
3, strengthen the light
The spring seedling season natural light weaker, seedbed insufficiency of light, to cultivate strong pepper seedlings, must improve the light conditions.New film should be used when seedling, the old film pervious to light to reduce 15%.Always clean membrane dust and other sundry, keep the membrane surface clean.Thin film on the condensed water droplets, prevent the penetration of light, to proper lookout for air or flap with the hand in a timely manner to eliminate water droplets.On the premise of that basic maintain seedbed warm, see the light, as far as possible early jie membrane appropriate night cover, to extend the time of the light.Clear around noon, according to the bed temperature some or all of the film and make pepper seedlings directly with natural light, which not only increase the light intensity, and can make the pepper seedlings to accept more direct exposure to the sun's ultraviolet rays, prevention for moderate growth, inhibition of sterilization, cultivating strong seedling is of great significance.
4, covering thinning
Besides turns the soil when sowing, as the seedling growth and partial turns the soil.Turns the soil commonly 2 ~ 3 times, the first after good seedling emergence, the second and third time after thinning, the thickness of each covering general is 0.4 ~ 0.6 cm.Thinning can eliminate inferior seedling, improve the uniformity of the nutrition area seedlings, is conducive to improve nutrition, lighting and ventilation conditions, cultivating strong seedling.Thinning, generally for 2 times, first in cotyledons fully developed between the thick blade thin, MiaoJu is 1.0 ~ 1.5 cm square, 2 times in 2 ~ 3 leaf, MiaoJu for 3 ~ 4 cm square.Thinning out seedlings and seedlings to root out bad, select and remain consistent growth strong seedlings, combined with thinning weeds thoroughly.
or affected by poison.
