1, planting time
Lettuce can grow in four seasons, and the growth cycle is very short, and two months is enough for harvesting. Generally, it is planted once in February-April in spring, harvested in May-June, planted once in August in autumn and harvested in September-65438+10. Heat-resistant loose leaf lettuce can be planted in spring and summer, and heat-resistant bulbous lettuce can be planted in autumn and winter.
Step 2 choose varieties
Generally, if you plant in greenhouse, you should choose lettuce varieties with cold tolerance, adaptability and strong disease resistance, so as to ensure the yield of lettuce.
3. Land selection and preparation
Lettuce seeds have high requirements for seedbeds, because lettuce seeds are very small, so not only the soil preparation should be fine, but also the bed soil should be flat. After the completion of soil preparation, a certain amount of farmyard manure should be sprinkled and evenly mixed into the soil to lay a good foundation for subsequent growth.
Step 4 raise seedlings
Choose suitable lettuce varieties according to the local climate, and then prepare a special seedbed for seedling raising. The seedbed must be nutritious and permeable.
First, spread the seeds of lettuce on the seedbed, and then cover it with a layer of fine soil. In order to keep soil moisture better, a film can be covered on the seedbed after sowing. Remember to uncover this film when the seedlings are unearthed, otherwise it will be airtight.
Step 5 plant
When the seedlings grow to about five leaves, they can be transplanted and planted. Be sure to water the seedbed before planting, which can increase the success rate of planting. It is best to plant it in the border, so as to increase the thickness of soil, which can make the roots of seedlings stretch better and be beneficial to the growth of lettuce.
6, management points
Pay attention to watering when planting, generally watering once a week after planting, so that lettuce can better spend the slow seedling stage. The number of watering in the future depends on the wet and dry conditions of the soil, but don't water too much before harvesting, otherwise it will affect the later storage and transportation.