Seedling raising method of Direct seeding Watermelon covered with plastic Film

First, it is necessary to appropriately reduce the planting density. The branches and leaves of watermelon covered with plastic film are luxuriant, the leaf area per plant increases, and the planting density should be reduced by about 10% compared with the number of plants in the open field. Second, thin soil mulching. Plastic film mulching direct seeding soil temperature is relatively high, good heat preservation, seedling emergence effect is better, do not need to take shallow sowing deep soil covering method, generally 1 to 2 cm; third, timely release of seedlings. The emergence of seedlings was checked frequently 4 to 5 days after sowing. When the seedlings are on top of the soil, they should break the membrane and seal the seedlings around the seedlings as soon as possible to avoid high temperature roasting the seedlings.