First, the site preparation and planting of the same cold-resistant lettuce, the south is made of a car with a width of 1 meter. The row spacing is 25-30 cm×30 cm. 1 day before planting, the seedbed is watered, and when the seedlings are planted, the soil is more soiled, less roots are damaged, and the seedlings are quickened after planting. Planting seedlings on cloudy or evening days. After planting the seedlings, water the roots.
Second, after the field management is planted in the drought, it is necessary to water the water to promote slow seedlings, and watering is carried out in the morning or evening. After colonization, 5 to 10 kg of urea per acre is added to the clear manure water, and after irrigating, the root system is expanded. Topdressing at the time of opening, 15kg of special compound fertilizer for vegetables, application, fertilization and watering to light manure. When the fleshy stems are inflated, the fertilizer is followed by a fertilizer, and 20 kg of nitrogen, phosphorus and potassium compound fertilizer is applied per mu. Before the closure, it is timely cultivating and weeding after heavy rain or rain.
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