Today, a special vegetable lettuce for you. According to some of the author's research, the price of lettuce in the northern vegetarian market is higher than in the south. Cultivated in the north and the north, but because it prefers warmer conditions, southern lettuce will be better. Lettuce has great growing needs and is suitable for growing in organic quality, water storage storage and propagation methods in modeling soil or loamy soil. The three main varieties include lettuce, lettuce, and bellows lettuce. Edible, flavorful, and delicious, it is one of the more popular vegetables. It stimulates the secretion of digestive enzymes, enhances appetite and promotes the body's intestinal walls to prevent constipation. Good lettuce is not difficult, the old farmers share planting techniques in detail

Lettuce is cold-hardy vegetables, such as cold weather, no high temperature. If the temperature exceeds 30 ℃, sprouting temperature is higher than 4 ℃, preferably 15 to 20 ℃, will not rat Lee. Its seedlings can resist zero lowering, seedling growth for 15-20 ℃, stem growth temperature of 11-18 ℃. Lettuce high, temperature varies greatly, flowering high temperature, temperature of 19-22 ℃. The reaction is very sensitive to the surface moisture state of the soil, it is necessary to continue to moisturize and keep the soil moist. Fertilizer in large quantities, it is recommended to grow water storage insulation in floating or loamy soils of organic quality. Silver acidic soil, suitable soil pH is about 6.0.

Lettuce originated in the coast coast, all over China are cultivated, wild.

When the seedlings are ready, the seeds are broadcast directly on the seedlings, after watering, using 4.5% Pepsi 3000 times. 5% Kung Fu vetro 3000 times liquid water to promote the underground pests, the large field per acre is 15-20 square meters, usually 25-30 grams per acre, covered with a shade network, and then compacted. Typically it is transplanted in a 32 x 35cm series of 4,800-5,200 plants per acre acre and seedlings that are sampled by the stem are removed to avoid early pumping.

Four, planting time

Lettuce planting needs to be based on the local climate and variety characteristics to determine the planting time. Spring lettuce started in December to March, seedlings in February to March; summer lettuce in April to May culture; fall lettuce in July to September seedlings. The Yangtze River Valley is mainly spring and lettuce, usually in September to October, 40 to five days of the first fall sowing, it will be harvested from April to May.

V. Cultivation techniques

1, the whole place

The roots of lettuce are weak, weak resistance. Before planting cultivate 15-21 cm per hectare per hectare of mature organic fertilizer, the plane is 120 cm and 80-100 cm. 7-8 watering before planting, water, 3-4 days, cover the film, it is necessary to flatten it so that the film and the ground is taut, and the soil is strict.

2, water management

Soil should not be dried too much during the seedling stage to prevent seedlings from senescence or prolongation. Lotus seat using appropriate control, the development of lotus leaves get rich. Borrowed ball should be enough, moisture will make the leaves small and bitter, water in the back of the ball is not too much to avoid cracks and soft rot in the ball.

3, fertilization management fertilization management

After seedlings, lettuce seedlings have been easily removed, which can produce a lot of roots and easy to survive after planting. The root water to be planted is poured for 2-3 days to increase the enhancement. Before planting lettuce, it is necessary to combine the tops of the tops. More than 30,000 kg per hectare and 450 kg of calcium phosphate; or special fertilizers for vegetables are per hectare per hectare per hectare: or urea, 450 kg of calcium piperidinium, 300 kg of compound fertilizer. Base fertilizer is 60%-65, acidic soil is 1050 kg.

Keep the soil moist during the seedling period. Every 3-5 days, when you experience your dryness, you should not have too much fat in the late growth of seedlings. When the plant is 30-40 cm, it should be properly controlled to prevent moisture between plants, leading to disease. Lettuce begins to fertilize the fertilization period. Fertilizer cracks the base and causes rot. At this time, it can be sprayed with volatile not all chase Lettufer fertilizer, 1,500 grams per hectare, or borax 0.2%-0.3% every ten days.

To over-prevent early pumping or plants can be sprayed with multi-syringe, and 50 grams of multi-syrup per butanol is used one month after plants. 50 kilograms per hectare. Be careful not to repeat the spray, you can not open it so as not to affect the yield and quality, and stop the supply of fertilizer 10 days before harvest to promote the stems. One month after planting, it is necessary to turn 7-2 times.

4, Planting. Watering during the fixation period to promote the development of the root system, maintain soil moisture, if you encounter relatively high temperatures during the fixation period, we must do a good job so as not to injure the seedlings. In China, it must be a shallow root. The roots of lettuce are not very developed. If planted too deep, that will damage the roots of lettuce.

Sixth, pest control

The main pests of lettuce have cold mold, bacterial roughness disease, wilt and aphids. Preventing and treating lettuce pests and diseases requires a combination of various prevention and treatment methods, agricultural prevention, physical prevention, and chemical control combinations. Cold mold and spotting can be effectively prevented by using proper rebound methods and by removing water promptly to increase light and air permeability. Old, diseased leaves removed and y burned for treatment is also an important physical prevention.

It can also be sprayed with Bordess Solution 200x dilution, or 65% Si Sen Zinc 500x solution, and is effective every 10 days, and is also effective in preventing freezing, and spotting. Drifting the seeds with 10% salt water on the seeds before sowing has an effect on preventing spasmodicity. There is a special sterilizer for lettuce, usually found in conventional pharmacies, and specialized sterilizers are also effective in repelling insects. Spray fine each time you use it, you can work in flood insects and spray several times in the blades and leaves, so you can avoid the cost of future nails. Good lettuce is not difficult, the old farmer shares in detail the techniques of cultivation

The author of the proposed here, although the content is not detailed, it should be able to work, the cultivation of lettuce must pay attention to the various points mentioned in the article so that you can achieve the goal of high yields. The author would have liked to have a more comprehensive content to present, each of which would have given you a better experience and the author would have more completely perfected this technique.