Lettuce is rich in nutrients and can be eaten raw. It tastes crisp and refreshing, slightly sweet. It is a vegetable dish of the majority of the people. There are many kinds of processing methods, and lettuce can be planted all year round. This article introduces the cultivation technology of lettuce greenhouses, including Cultivate strong seedlings and field management techniques, let's take a look!
Cultivate strong seedlings:
1 Seedbed preparation: The seedbed soil should be finely crushed and leveled. Apply the bottom fertilizer per square meter, spread it, plow the tillage, level the surface, and pour the bottom water before planting. After the underwater seepage, spread a thin layer on the surface. Sift through the fine soil and then sprinkle the seeds.
2 Seed treatment: The seeds are wetted with water in a petri dish or gauze bag lined with filter paper, placed in a refrigerator at 4-6 ° C for 1 day and night, and sprayed with a new high-fat film 800 times before seeding for seed dressing. (It can rid the underground pests, isolate the virus infection, does not affect the germination and swelling function, strengthen the breathing intensity, and increase the seed germination rate).
3 seedling management: reasonable control of temperature during seedling period, seedlings in 2-3 true leaves, when the seedlings have 5-6 true leaves, they can be planted. When planting, try to protect the roots of seedlings. After transplanting seedlings, Spraying a new high-fat film can effectively prevent the moisture on the ground from evaporating, the moisture of the seedlings is not transpiration, the pests and diseases are isolated, the seedling period is shortened, and the survival rate is improved.
Field management:
1 Watering: After the seedling water is slowed down, it depends on the soil moisture and growth conditions to master the number of watering. When the temperature is low in spring, the amount of water should be small, and the date of watering interval should be long; the amount of water needed during the period of growth should be kept, and the soil should be kept moist; after the formation of the leaf ball, the watering should be controlled to prevent the unevenness of water from causing cracking and rotten heart; Spray a new high-fat film to adjust the amount of water absorbed.
2 cultivating weeding and fertilizing: After planting and slowing down the seedlings, weeding and weeding should be carried out to enhance soil permeability and promote root development. In the early stage of growth, it is possible to apply no fertilizer according to the needs of plants.
3 How can we obtain high-yield and high-quality lettuce, and spray the strong stems during the vigorous growth period to make the stems of the plants thick, the leaves are thick, the leaves are fresh, the plants are flourishing, and the natural taste is strong. At the same time, it can improve the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce residual poisons.
4 pest control: The main diseases are downy mildew, soft rot, viral disease, dry rot, top burning disease; insect pests mainly include leaf miner, whitefly, aphid, thrips and so on. Most of the lettuce used for leaf lettuce is used for raw food, and pests and diseases should be based on prevention. Spraying targeted drugs with new high-fat membranes to reduce pesticide residues and prevent infection by pathogens.
After the vegetable farmers have read the lettuce cultivation technology in the greenhouse, have they learned some more? Planting lettuce to achieve scientific, empirical and management methods, can make lettuce grow and thrive. I hope that the above planting techniques can help the majority of farmers.
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