The oilseed rape is the so-called "home grown (non-wild) bitter hemp".

The oil wheat lettuce, also known as oat lettuce, also called bitter vegetables, lettuce, belongs to the family of Asteraceae, lettuce plants, is to the young tips, young leaves for the product of the pointed leaf type leaf lettuce, leaves were long lanceolate, color and lustre light green, texture brittle, the taste is extremely tender, fragrant, with a unique flavor.

Oil lettuce heat-resistant, cold-resistant, adaptable, can be planted in spring and summer harvest, summer and fall harvest, early fall planting harvested before New Year's Day, as well as winter greenhouse production. General greenhouse production, before the arrival of winter breeding into strong seedlings is appropriate. That is, the seedling period to avoid the January cold season. Early spring sowing 1 ~ March in the shed seedling, standard shed building 2 beds, the middle of a ditch, deep turning to build beds, watering the bottom of the water, seed sowing beds, covered with seed mud, to the extent that the cover did not have seeds, paving the plastic film (2 layers of film l layer of film), generally 10 ~ 15 days out of the seedling, when the time of rain and cold temperatures out of the seedling a little longer. Qi Seedling after the removal of the film, ventilation, daytime to prevent high temperature injury to the seedlings, the night to prevent frost damage; summer sowing April to June open field nursery, choose a high potential ground, 2 meters even ditch, deep tilling Shi rotted stable fertilizer, building bed leveling. Soak the seeds for 3 hours, wait for the seeds to dry and then sow. Seedling bed watering bottom water, seed dispersal in the bed, and cover the seed mud, watering, such as high temperature and drought, bed covered with shade net, Qi seedlings morning and evening uncovering the net, seedbed fertilizer and water should be moderate, should not be too dry; autumn sowing from July to September, the oilseed rape seedlings to be immersed in the seeds to promote germination.