Thinning, patching, membrane rupture and emergence: seedlings are unearthed 12 to 15 days after sowing. After the first pair of basal leaves appear, thin and replenish the seedlings so that the distance between the seedlings is 15 cm. Punch holes in the film to guide the seedlings to emerge, and cover the base of the seedlings with the mulch film tightly.

Cultivating and cultivating ridges: In late May, when the seedlings are 7 to 8 cm tall, remove the mulch and water and topdress. When the soil surface is slightly dry, cultivating is carried out to loosen the soil and preserve moisture. Weeding and ridge cultivation are carried out in combination with cultivating. The soil between the rows is cultivated into the spaces between the plants in two batches to form small high ridges with a height of 15 to 18 cm. Stop tilling and cultivating the soil after the support is reached.