Open tomatoes should be selected for disease resistance, high quality, high yield, resistance to storage and transportation, good commercial, and market-adapted varieties. Summer and autumn cultivation selection of early and mid-maturing varieties that are resistant to low temperature and low light, fast fruit development use greenhouses, Yangshuo and other nursery facilities depending on the season and climatic conditions. Summer nursery should also be equipped with pest control and sunshade facilities. You can use the plug Nursery and industrialized nursery, and disinfection of nursery facilities to create environmental conditions suitable for the growth and development of seedlings.
The preparation of nutritious soil for nursery shall be based on local conditions, selecting field soil without pests, decomposing farmyard manure, peat moss, caramel ash, etc., mixing according to a certain ratio, requiring clearance of about 60%, ph6~7, and quick-acting phosphorus of 100 mg/kg or more. , Available potassium 100 mg / kg or more, available nitrogen 150 mg / kg or so, loose, fertilizer, water, nutrition completely. Spread the configured nutrient soil evenly on the sowing bed with a thickness of 1 cm.
Before sowing, the seeds were placed in 55-degree hot water, soaked in water for 15 minutes, then soaked in warm water of 25-30 degrees for 5-8 hours, and then the seeds were washed several times by hand to wash the surface of the seed. Out, wrapped in a clean, damp cloth, placed under 25 degrees to 30 degrees under the conditions of germination, germination did not wash the seeds with 20 degrees of hydrophilic again, after 3 to 4 days, more than 70% of the seeds can be sown after dew. Summer corn can be sown directly with disinfected seeds without soaking.
After sowing, select sunny wind-free weather, and pour water into the bottom of the wave, moisten it to a depth of about 10 beds of bed soil, and after the water seeps, spread a layer of nutritive soil and spread the seeds evenly. In general, 20 to 30 grams of seed is used for each acre of cultivated land, and the seeds can be sown uniformly. The seed to be sown can be divided into 2 to 3 points and sown in 2 to 3 passes. Covered with 0.8 to 1.0 nutrient soil after sowing. In winter and spring, the bed cover is covered with plastic film. The summer nursery bed cover shade net or straw, and 70% of the seedlings are removed from the top soil.
Separating seedlings is an important measure to cultivate tomato seedlings. Spring and summer wolfberry cultivation, more than 1 month after sowing, seedlings you2 leaf 1 heart is the appropriate time for the separation of seedlings, seedlings can be in Yangshuo, can be carried out in the greenhouse, at night to keep warm.
The standard of tomato seedlings is the cultivation of spring and summer seedlings, plant height 25 cm, stem root more than 6 mm, now big bud. Spring and autumn cultivation of seedlings, 4 leaves and 1 heart, plant height of about 15 cm, around 0.4 neck thick, within 25 days of bred. Dark green leaves, no pests and diseases.
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