When is the planting time of Shandong lettuce?

Lettuce, also known as Qianjincai, lettuce, lettuce, green shoots, bamboo shoots, vegetables for common food, in most areas of China have planted. When is the planting time of Shandong lettuce? How to grow?

1. When is the planting time of Shandong lettuce?

Shandong lettuce is generally sown in September-October of the first autumn, and after 40-50 days, the seedlings can be planted with 5-6 leaves. The winter of that year can be safely wintered, and the harvest can be harvested in April and May of the following year.

II. How to grow lettuce in Shandong Province?

1. Land selection and preparation

Choose organic matter rich, water and fertilizer conservation clay loam or loam. It is suitable for slightly acidic soil with pH value of about 6.0. Cultivate 15-21 cm before planting, combine with decomposed organic fertilizer 75,000 kg/ha, rake fine and level. Make the ridge spacing 120 cm, 80-100 cm wide high ridge. 7-8 days before planting, furrow irrigation once permeable, 3-4 days after mulching film, need to be tightened and leveled, so that the film and the ground close, all around with soil pressure tightly.

2. timely sowing

When the seedling land is prepared, seeds are directly sown on the seedling land, after watering, the seedling land is irrigated with 3000 times solution of 4.5% Baishida emulsifiable solution and 3000 times solution of 5% kungfu emulsifiable solution to prevent underground pests, 15-20 square meters of seedling land are required for planting in each mu of field, and 25-30 grams of seeds are generally used in each mu of field, covered with sunshade net, and then compacted.

3. close planting and transplanting

lettuce fertilizer needs a large amount, to choose fertility strong loose loam, mu fertilizer 2000-3000 kg base fertilizer, deep ploughing after the treatment of 1.6 meters (even ditch) ridge surface. The planting density varies according to variety and season. Early-maturing species, plant spacing of 23-18 cm, planting 8500-12000 plants per mu; late-maturing species 30-25 cm, planting 7000-8000 plants per mu.

4. field management

Spring lettuce overwinters with seedlings, grows slowly in the early stage, requires less fertilizer, and is irrigated with clear dung water once after planting. Promote root growth. Before winter, we should control fertilizer and water, avoid excessive growth, enhance cold resistance, and safely winter.