The absorption ratio of nitrogen, phosphorus and potassium in the whole growth period of ginger is 5: 1: 8, and the demand for nutrients has two peaks, the first is the three-branch period, and the second is the rhizome expansion period after the autumn.

Principles of fertilization: re-apply organic fertilizer as base fertilizer, with a certain amount of compound fertilizer, the top fertilizer is compound fertilizer, the ratio of nitrogen, phosphorus and potassium is reasonable, and the application of boron, zinc, calcium and other elements is also emphasized.

Base fertilizer: It can be applied by hole or ditch. Hole application: apply fertilizer between holes in two ginger species. Strip ditch application: pay attention to the isolation of seed fertilizer, the fertilizer is 6-8 cm below the seed side. It can use 40-50 kg of compound fertilizer such as nitrosulfur or potassium sulfate.

The root of ginger is a fleshy root, and its ability to absorb fertilizer is weak.

Light application of fertilizer: when the seedlings grow 1-2 branches, combined with watering and flushing application of secondary fertilizers, with an interval of 10-15 days, each time applying high nitrogen compound fertilizers such as nitrosulfur base 15-20 per mu kg.

Heavy application of joint fertilizer: also known as conversion fertilizer, the three-branch stage, ginger enters the vigorous growth period, is a key period for top dressing, topdressing 50-70 kg of high potassium compound fertilizer such as nitrosulfur per top.

Cultivation of supplementary fertilizer: It is carried out during the tuber enlargement period. When the plant has 6-8 branches, 25-50 kg of high-potassium compound fertilizer per acre is applied in two applications at intervals of about 15 days.

Combined with disease prevention and insecticide, foliar spray 0.2-0.3% potassium dihydrogen phosphate solution for 2-3 times.