How to grow tomatoes
Tomato is an annual herb of Solanaceae, also known as tomato, tomato and persimmon. It can be eaten raw, cooked and processed, and it is widely planted in our country, so how to grow tomatoes?
How do you grow tomatoes?
1. Soaking seeds to accelerate germination
Soak the selected seeds in clean water for 1-2 hours, then remove them and soak them in warm water. Usually untreated seeds should be soaked in warm water for 6-8 hours to fully expand, and then sprout at a temperature of 25-28 degrees Celsius for 2-3 days.
two。 Sowing and raising seedlings
Sow, strip sow or sow the germinated seeds according to the standard of 20-30 grams per 667 square meters (reference standard). Sowing time is considered according to variety, region, climate and other comprehensive factors, such as open field cultivation in spring. Beijing area usually sows and raises seedlings from mid-February to early March. It is cultivated in open field in autumn and sown in late July to early August in places to the south of the Yangtze River, such as Shanghai and Nanjing. Cover the soil immediately after sowing, and use sifted fine soil.
3. Colonization
The early maturing cultivation in spring protected land was planted in the cold tail and warm head weather from late February to early March, and plastic film mulching in the open field was planted in the cold tail and warm head weather around March 20. The timing time and density can also be determined according to the specific local conditions.
4. Field management
Tomato growth period appropriate topdressing, not partial application of nitrogen fertilizer, must be combined with phosphorus and potassium fertilizer. Topdressing should be carried out in time, the first topdressing should be carried out 7-10 days after planting, the second topdressing should be carried out when the first ear began to expand, and the third topdressing should be carried out when the first ear was about to be harvested and the second third ear began to expand.
In addition, tomatoes should be pruned, framed and tied in time, and harvested should also be carried out in a timely manner.
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