Method for improving soil by interplanting oilseed rape in orchard

The invention discloses a method for improving soil by interplanting oilseed rape in an orchard, and belongs to the technical field of soil improvement. The method comprises the steps that the oilseed rape is sown in the orchard in late September, 20 kg of compound fertilizer of base fertilizer is applied to each mu of rape, 15 kg of urea of overwintering fertilizer is applied to each mu of rape, the oilseed rape is totally smashed and turned into soil or covered with soil when growing to the full-bloom stage of March, the organic matter content of the soil is increased, and the result shows that the soil improvement effect is remarkable. According to the method, the contents of organic matter and quick-acting nitrogen, phosphorus and potassium in the orchard soil can be effectively increased, the volume weight of the soil is reduced, and the situations of soil hardening and nutrient imbalance of the orchard are better solved; and bolts of the oilseed rape interplanted in the orchard can be picked for eating