How big is the tomato seedling transplanting?

Tomato seedlings age 20-25 days, seedlings have 3-4 leaves can be transplanted, at this time for the planting period. It should be noted that tomatoes do not transplant seedlings during seedling raising, large seedlings are planted and damaged, and if there is excessive growth in seedling stage, chlormequat should be sprayed 1-2 times in time. The following is to introduce the greenhouse tomato seedlings transplanting planting management methods.

1. soil preparation and planting

Before transplanting, cover the shade film, open the surrounding area and leave only the upper part to prevent rain and strong light. After cover the film, make the planting bed into a high flat bed with 100cm width or a ridge with 50cm width, apply base fertilizer in combination with the bed, irrigate with full moisture, and when two ears and fruits are reserved in the future, the planting plant spacing is 25cm; when three ears and fruits are reserved, the planting plant spacing is 30cm, and about 4500 plants are planted at 667m.

2. Post-colonization management

After planting, open the air day and night, release the bottom air, close the greenhouse around, only open the air in the middle and upper part, when the external temperature drops below 15℃, stop the air at night, control it at 25-30℃ in the day and 15-17℃ at night; 2-3 days after planting, when the soil moisture is suitable, tilling and loosening should be carried out in time, and ridge cultivation should be carried out in combination with loosening. After the seedling is slowed down, one water can be poured, and then less water should be poured to prevent excessive growth; Single pruning is adopted, 3-4 fruits with correct fruit shape are left on each ear, 4-5 fruits can be left for small fruit varieties, and the rest fruits are removed.