Seedling raising method of dry cucumber in spring greenhouse

The seeds are generally sown from late February to early March, and early-maturing varieties with high yield, disease resistance, low temperature and low light tolerance and good commercial quality are selected. The nutritious soil was prepared before sowing, and proper amount of calcium superphosphate and diammonium phosphate were added to the nutritious soil, and the nutritious soil must be disinfected after it was prepared; the selected seeds were disinfected before sowing, soaked in 55 ℃ warm water for 15 minutes, then soaked in 100 times solution of new high-fat film, removed and leached, wrapped and placed under the condition of 28 ℃ and 30 ℃ to accelerate germination. The seeds should be sown in sunny days after germination. Cucumber sowing requires 5cm deep, the ground temperature is not lower than 15 ℃, otherwise the budding is slow and uneven, and the phenomenon of rotten seeds is easy to occur. When sowing, hit through the bottom water, put a seed bud in each nutrition bowl (tube), insert the seed bud end down into the nutrient soil, cover the sterilized nutrient soil 1.5cm, spray the liquid of 600cm 800 times of the new high-fat film, improve the seedling emergence rate, and then cover with plastic film.