(1) choose the groundwater is lower (0.6m or less), the soil layer is deep and fertile, water retention and fertilizer retention capacity, good drainage and irrigation performance of the plot for planting.

(2) Each mu of land to apply 3000-5000kg of rotting organic fertilizer, 25kg of calcium superphosphate, 20kg of potash as a base fertilizer.

(3) Deep plowing and deep turning of the land, turning the fertilizer into the soil, and then leveling and opening the box. The width of the box is 80cm, the height is 16-24cm, and the width of the box ditch is 33cm.

2, planting

(1) Planting will be carried out when the temperature of the ground is stabilized above 8-10℃ at 10cm.

(2) If it is an early maturing tomato varieties, generally in accordance with the seedling spacing 50 × 25-30cm for planting, transplanting 4500-5000 seedlings per mu. If it is a medium-late maturing tomato varieties, generally in accordance with the seedling spacing 50-60 × 33-35cm for planting, transplanting 3500-4000 seedlings per mu.

3, water and fertilizer

(1) Fertilizer

①First fertilizer after the first fruit began to sit, 25kg compound fertilizer per acre, or 15-20kg urea and 20-25kg calcium superphosphate. If there is a shortage of potassium, 10kg of potassium sulfate should be applied.

②The second fruit and the third fruit began to expand, according to the method of the first fertilization once again.

③Foliar fertilizer. You can choose 0.2-0.4% potassium dihydrogen phosphate solution, or 0.2-0.3% urea solution, or 2% calcium superphosphate solution.

(2) Moisture

①Pouring and applying thorough water after planting.

②About 4-5 days after planting, pouring a slow water, until the fruit are not watered.

③After the first fruit sat, start watering, ensure that the soil moisture content control at 70-80%.

4, management

(1) after the first fruit sitting, set up a herringbone frame, and pay attention to tie the vine.

(2) Single-stem pruning: in addition to the main stem, the rest of the lateral branches are removed when they reach 4-7cm.

(3) Double-trunking: remove all lateral branches except the main trunk and the lateral branches under the first inflorescence.

5, emergence time

The emergence time of tomato seeds is related to the temperature, usually around 7-14 days (too low a temperature, the emergence rate is slow).

6, temperature management

(1) sowing to seedling: 28-30 ℃ during the day, 16-18 ℃ at night.

(2) Seedling to seedling: 20-25 ℃ during the day, 13-15 ℃ at night.

(3) seedling splitting to slow seedling: 26-32 ℃ during the day, 16-18 ℃ at night.

(4) slow seedling to seedling refining: 20-25 ℃ during the day, 13-15 ℃ at night.

(5) refining to planting: 20 ℃ during the day, 5-8 ℃ at night.

7, seedling splitting, seedling refining

(1) in the seedlings grow to 2 leaves and 1 heart when the seedling splitting, seedling spacing control in 10 × 10cm, or 8 × 10cm.

(2) 7-10 days before planting, increase the amount of air release, reduce the temperature of the seedling refining.