Expert Answer

First of all, according to the different types of cultivation to choose the appropriate nursery. Early spring protected cultivation generally choose greenhouse nursery, in the greenhouse to isolate the best temperature and light conditions of a piece of nursery beds for individual management; while open field cultivation and protected fall delayed cultivation can be used to choose a warm bed, plastic shed or cold bed nursery.

Secondly, in the selected plots of land to do nursery beds, the first to do beds of land for deep turning, depth of 30 cm or so, and then according to the size of the 1.5 m × 2 m to make flat beds, ridge height 15 cm, will be prepared to spread the nursery beds of soil evenly, with a rake columbine, with a wooden board lightly pressed, to prevent the watering, the beds convex and concave. When sowing seeds, first use warm water at about 30 ℃ to pour enough water to moisten the bed soil. After the water seeped down, found that the border is not flat place, fill with nursery bed soil, and then evenly sprinkled with a layer of medicinal soil, the good germination of the seed with fine sand, evenly sown into the seedbed or nursery tray, covered with a thin layer of medicinal soil, the top and then covered with a thickness of about 1 cm of fine nutrient soil, and finally covered with a layer of film on the bed for insulation and moisturizing.

Tomato sowing should pay attention to the problem:

(1) choose a good weather tomato sowing should choose the end of the cold wind, the head of the warm wind to carry out, especially in the winter nursery, temperature management is very important. After sowing a few consecutive sunny days, the temperature in the bed is high, in order to emerge quickly and neatly. Otherwise, continuous encounter with cloudy and snowy weather, the bed temperature drops, often slow emergence of seedlings, but also prone to disease.

(2) the bottom of the water should be watered in the day before sowing or the morning of the day, the first nursery bed watering bottom water, the requirements of 8 to 10 cm within the soil layer have been fully wet, so that the amount of water can be maintained until the emergence of seedlings do not have to water. If the amount of water is insufficient, it is difficult to emerge, then watering, resulting in the top of the bed soil clumping slate, seedlings are more difficult to emerge, so watering must be loosened.

(3) the amount of seed sown should be appropriate amount of seed sown to dry seed calculation, to sow 4 to 5 grams of tomato seeds per square meter is appropriate. Sowing too dense, the emergence of seedlings is easy to "cap", and the seedlings are weak, easy to grow.

(4) cover film must be covered with film after sowing, can effectively prevent the dissipation of soil moisture, but should also pay attention to the spring, fall seedlings are prone to high temperature baked seedlings phenomenon, be sure to shade in time.

Tip Sheet

Tomato seeds are fine, usually in the form of sowing, in order to sow evenly, often mixed with fine sand, the ratio of 4 to 5:1. seeds purchased by the grain is recommended to use the method of point sowing root nursery, which can improve the quality of nursery.