First, change the way of cultivation 1. Change varieties. Old varieties are susceptible to diseases and insects, and their production performance is poor. Therefore, new varieties with strong adaptability, strong resistance to diseases and insect pests, and high yield should be used to replace old varieties. Such as Rongza 7th, Rongza 8th, Yiyou 13, Nanyou 6, etc. 2. Delay sowing for proper sowing. The sowing of rapeseed was too late, the emergence rate was low, and the seedling stage had poor growth, which affected the development of the medium-term opening. Therefore, the sowing time should be appropriate and the optimum sowing date: between September 18-September 25, when the seedlings are transplanted, and between October 5th and October 10th. 3, change live for transplanting seedlings. Seedlings can cultivate strong seedlings with good root development, strong absorption of nutrients, vigorous growth of seedlings, and high number of branches and high yield. 4. Mix and transplant to transplant seedlings for grade transplanting. Rape seedlings are mixed and transplanted. The seedlings are of different strengths and weaknesses. The difference in growth is not easy to manage. It will result in weak meats and strong food. The whole plant growth is not neat; the seedlings are transplanted in the same grade and are uniform in growth, which is beneficial to field management and promotes robust growth and development of plants. When transplanting seedlings, they should be “uniformly, straightly, deeply, and steadily”. The seedlings have a high survival rate and thrive. Second, timely management, apply three times fertilizer planting to apply the base fertilizer, after transplanting and survival to do a good job of cultivator weeding, enhance soil permeability. After the transplanting, the three fertilizers were mainly applied. 1, open fertilizer. From late December to early January, farmyard manure is the main factor, and nitrogen fertilizer is properly blended. The amount of branching is increased by 100-150 grams of urea/fertilizer. 2, Lei moss fertilizer. In early February, quick-acting phosphorus and potassium fertilizers are mainly used, and they are used in water and manure to increase the number of pods. 3, flower fat. During the flowering period, 200 grams of boron fertilizer was used to spray 150 grams of potassium dihydrogen phosphate to increase the fertilization rate and increase the number of effective corners.