Lettuce autumn cultivation essentials

First, seedling transplanting

- Seed treatment. Seeds should be treated at low temperatures before sowing. The first is to use low temperature germination, use 100 grams of seeds in 1 kg of water, and then use the four drops of 1 kg of water to soak for 6-8 hours, then rinse with water and filter dry. Wrap it, then wrap it around the cloth with a semi-dry wet towel and put it in the refrigerator (temperature below 16 °C) for 2-3 days.

- Seedling and seedbed preparation. Firstly, the seedbed is flattened, and the seedbed is dampened and soaked with 10 grams of enemies per square meter. Then the seeds are spread on the surface of the car, and 5-8 grams per square meter are planted to keep the water and shed. The height of the arch shed is preferably 1m-12m. After that, the film is covered on the arch frame. The film is 6 inches away from the ground. It is not ventilated and ventilated, and the soil shade net is covered on the film.

- Management of the seedbed.

In management, the focus is on the prevention and control of blight, and the roots are filled with 1:500 times of diclosan. The seedbeds are often kept moist. When splashing with water, it is best when it is cool in the weather and cool in the ground.

- Cultivation management

Applying the bottom fertilizer, apply 10,000 jin of pig manure in one mu of land, or apply 5,000 kg of chicken and duck manure after fermentation, and then apply 50 kg of compound fertilizer with 45% of the whole field, and also 50-100 kg. Lime is applied throughout the field. After deep turning, it is flattened, not thin, and the box is opened (the distance between the rows is 1.5 feet and the distance is 1.2 feet). 3,500-4,000 nests per acre are planted, and 10% of the light manure is drenched immediately after planting.

Lift the seedling fertilizer, apply the seedling fertilizer immediately after 5-7 days of planting, and use 5 kg of urea to raise the seedlings with pig manure.

When the seedling grows to 5-6 inches, the acre is treated with 1.5 kg of urea and pig manure.

--Pest Control. The main shoots are soft rot, downy mildew, brown spot disease, sclerotinia disease, and are controlled by a single shot. Method: 1 barrel of water (30 kg) with 3 gram of lenodin to accelerate Kling 15 Gram, add 20 grams of chlorothalonil, 20 grams of Du kekelu, plus 3 ml of love, when spraying, every 10 days, even spray 3 times. Special attention is paid to: spraying the boron fertilizer on the leaf surface. When the seedling grows to 6 inches high, add 15 grams of water per barrel of boron fertilizer (not excessive use) for foliar application, and apply again when sealing the tank. .

Second, spread the broadcast. Seed treatment (same as seedling transplanting); re-applying base fertilizer to keep the soil moist, pay attention to cooling and drought-resistant seedlings. The amount of seed used is 0.75 kg; from budding to harvesting small plants for 25-30 days. (Cultivation management, pest control and seedling transplanting are the same).

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