Potato-vicia sativa intercropping method under water and fertilizer regulation and control for ensuring stable yield and high quality of potatoes and fertilizing soil

The invention discloses a potato-vicia sativa intercropping method under water and fertilizer regulation and control for ensuring stable yield and high quality of potatoes and fertilizing soil. The method comprises the following steps of (1) adopting high-ridge double-row planting in mid-to-late April every year, planting two rows of potatoes on ridges, applying compound fertilizer, planting vicia sativa in furrows, applying nitrogen fertilizer to green manure rows, and laying drip irrigation belts; (2) irrigating in the middle of June; (3) irrigating in late June; (4) crushing the vicia sativa in a full-bloom stage, and turning and pressing the crushed vicia sativa on ridges for decomposition; (5) irrigating in the middle of August; and (6) irrigating in early September. According to the method, the potato yield can be guaranteed, the potato quality can be improved, the soil fertility can be improved, and the goals of replacing large fertilizer with small fertilizer and repairing while producing are achieved