1, seed selection and soaking, you can use the seeds in the rape pod of the previous year, and choose the seeds with full particles and no pests. The first time you plant rape, you can directly buy excellent varieties with strong disease resistance and lodging resistance. Disinfect the selected seeds with salt water with the concentration of 10%, soak for about 5 minutes and stir, and then rinse the seeds to remove the sclerotium impurities mixed in the seeds.

2. Land selection and soil preparation: Choose a section with convenient irrigation and drainage and loose and fertile soil. You can plow the land and break the clods to at least 20 cm. If the soil fertility is insufficient, farmyard manure can be appropriately added and mixed into the soil for ploughing. Loose and breathable soil is beneficial to seed germination and respiration.

3. sow seeds. Wait 2-3 days after ploughing before sowing. Dig several small ditches in the ground, sprinkle rapeseed on the slopes of the ditches, and cover the soil after sowing the seeds. The thickness of soil layer 1.5 cm is enough. After the soil layer passes, it will limit the breathing of seeds and it is difficult to break the soil. Sprinkle water on the soil slope properly, water in the small ditch, and sprinkle water gently to avoid washing the seeds out directly.