Seedling raising in nutrition pot is to induce flower buds by controlling the nitrogen nutrition status of plants in nutrition pot. Generally, the flower bud differentiates in mid-September, and the harvest begins at1late October 165438+, which is about 10 days earlier than the seedbed seedling raising. In recent years, various producing areas have invented and popularized labor-saving measures such as raising seedlings in overhead nutrition pots and picking seedlings in three-dimensional greenhouses, as well as a series of seedling raising methods and supporting technologies such as no-follow-in seedling raising, pest control in net rooms and aerial seedling picking.