Tomato correct seedling method

Different planting methods, different regions, tomato seedling sowing time is not the same, winter seedling time is 70-80 days, summer seedling time is about 30 days, spring seedling time is 50-60 days, the general sowing time is based on the local tomato suitable planting period, projected forward to the calendar age of the seedling, is the local seedling time. Is the local seeding time, for example, the northern plastic greenhouse early spring tomatoes suitable for planting in mid-March, then the seeding time for mid-January.

Two, tomato nursery way

Tomato nursery way according to the local temperature conditions to choose the nursery facilities, in our country is more widely used in the open field nursery, plastic greenhouse nursery, greenhouse nursery and hotbed nursery.

Open field nursery Open field nursery is a traditional rural nursery, generally used in the summer directly on the planting plots live planting of tomatoes, after sowing, not covered with sun and rain, and other things, with a fine soil cover the seeds can be, and so on, after the emergence of seedlings after the 3-4 true leaves, each hole to leave a strong seedling, and the rest of the pulling out.

Plastic greenhouse nursery Plastic greenhouse nursery is generally used for early spring nursery, large temperature difference between day and night, conducive to the cultivation of strong seedlings, effectively preventing the occurrence of seedling characteristics of futility, plastic greenhouse is both the ideal nursery facilities, but also vegetable planting facilities, the temperature in the greenhouse is mainly from the sun's irradiation, so in the plastic greenhouse nursery, pay attention to thermal insulation against the cold, generally in the use of multi-layer film cover to Thermal insulation, in the greenhouse and then build a small arch or in the shed, in the seedlings when the seedlings are divided, in the evening with grass curtains covered with thermal insulation, to ensure the survival rate of seedlings.

Greenhouse nursery greenhouse is like a room filled with hot air, in the seedlings at any time you can regulate the temperature of the greenhouse to create a suitable temperature for the germination and growth of tomato seeds, you can cultivate a robust age-appropriate seedlings, in the low temperature of the winter nursery when the effect is the best, a high rate of emergence, that is, the cost of construction is too high, generally very few planters to choose.

Temperature bed nursery in the seedbed of the bottom of the bed laying electric heating tube, to increase the soil temperature of the seedbed to meet the growth of tomatoes in the seedling period of the temperature needed to improve the quality of nursery and shorten the nursery time.

Three, tomato seed treatment

Select the year or the next year's high germination rate, fast germination of high-quality tomato seeds, in order to reduce the occurrence of pests and diseases in the later stage of the sowing of seedlings before the seed of tomatoes should be sterilized, commonly used methods of high-temperature treatment, low-temperature treatment, warm-water immersion, chemical dipping seed four methods.

High-temperature treatment method This method has a certain preventive effect on the tomato virus disease. Open field direct seeding with this method, the best results, will be dry tomato seeds in a constant temperature box at 70 degrees for 72 hours, and then take out with warm water to soak the seeds, germination and other actions, in most of the seeds dew white when sowing.

Low-temperature treatment method First use warm water to soak the seeds, in the seed expansion is about to germinate, wrapped in gauze and placed in a 0-degree environment for about 24 hours, and then take out for routine germination, the advantage of this method is to promote the speed of germination of seeds, improve the resistance of seedlings to cold.

The method of soaking seeds in warm water refers to the use of two boiled and one cooled water to make 55 degrees of warm water, soak the seeds in warm water for 15-20 minutes, while soaking and stirring in one direction, the purpose of stirring is to prevent high temperature scalded seeds, affecting the germination of the seeds, 20 minutes immediately after the seeds are placed in 25-30 degrees of warm water for 30 minutes and stop stirring, to achieve the purpose of disinfection.

Pharmaceutical seed dipping refers to the disinfectant formulated into the appropriate concentration to soak the seeds, can effectively eliminate the germs on the surface of the seeds and inside the seeds a method. Commonly used are potassium permanganate disinfection, formalin disinfection.

Potassium permanganate disinfection method refers to the use of 0.1% potassium permanganate agent to soak the seeds for about half an hour, formalin disinfection method refers to the first 3 hours of soaking the seeds in water, fish out and put into the formalin 100 times the agent solution in the soaked seeds for about 15 minutes, take out the wet gauze wrapped in an airtight environment disinfection for 2-3 hours, and then rinsed with clean water.