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First, the sowing time lettuce is relatively hardy, in the winter generally use Yangshuo nursery, to choose the terrain Gaozao, leeward sunny, sunny enough land. Sowing period is generally from late December to early January.
Second, seedling preparation, sowing before sowing 7 to 10 days, the plastic film buckled to the nursery bed, covered with grasshoppers at night, as much as possible to improve the bed temperature. The seedbed fertilizer is mainly composed of organic fertilizer and available nitrogen fertilizer. After the bed soil is prepared, appropriate amount of soil sterilizing agent is applied, and the bed soil is mixed and mixed, and the soil is turned upside down. Pour small water, after the water seeps, spread the seeds evenly on the surface, and then cover 0.5 cm of fine soil mixed with drugs, immediately close the impotence, cover the grass at night.
Third, the seedbed management seedlings unearthed before the grass cover should be covered early cover, not ventilation, in order to facilitate emergence. When the seedlings are unearthed, they can be properly ventilated and hit with two air eyes to prevent the seedlings from being overwhelmed by excessive temperature. At this time, grasshoppers should cover the cover as early as possible to extend the lighting time. When seedlings grow to 2 to 3 true leaves, seedlings should be carried out. Sub-cultivation soil with pastoral soil and decomposed organic fertilizer and compound fertilizer into nutritious soil, into the nutrient bowl, select healthy seedlings transplanted into the nutrient bowl, set watering, sealing, do not ventilate, over 5 After 7 days, proper ventilation. Combine watering and spraying 2 to 3 times to prevent common diseases such as downy mildew and Sclerotinia.
4. Pre-planting seedlings When seedlings grow to 5 to 6 leaves, strong seedlings, large leaves and short internodes are selected as production seedlings to eliminate high-legged seedlings, weak seedlings and diseased seedlings in time. About 10 days before planting, gradually increase the ventilation of the seedbed, cover the membrane during the day, cover it at night, and cover the grasshopper when it encounters strong winds and cool the weather to prevent freezing damage. Through low-temperature hardening of seedlings, the ability of the seedlings to resist cold and adapt to the external environment is enhanced to increase the survival rate of the seedlings. In the middle and late March, sunny weather and windless weather were selected to cover the mulch.
Spring lettuce seedlings 4 points
The planting of early spring lettuce in the form of mulching film has the characteristics of small investment, labor saving, labor saving, stable price, and high net profit. This cornice is scheduled to be planted in March. Since the climate in early spring is suitable for the growth of lettuce, it can be harvested in June and the yield per mu is over 10,000 pounds. Next, introduce the technical points of using Yangshuo to cultivate lettuce seedlings for your reference.