How to Apply Fertilizer to Ginger?
During the seedling period, the ginger rhizome will absorb less 
nitrogen, phosphorus and potassium, as well as the absorption of phosphorus, nitrogen and potassium will increase in the growth period. Autumn is the season when the ginger need fertilizer, so we should apply fertilizer according to the requirement of ginger fertilizer. Timely topdressing nitrogen fertilizer will help increase production.
Ginger fertilization is divided into basal and top dressing. Basal fertilizer includes organic fertilizer, cake fertilizer and chemical fertilizer. Organic fertilizer should be applied before planting, the general amount is high quality decomposed chicken manure 5-8 cubic meters per acre, plowing after applying; cake fertilizer and chemical fertilizer should be applied in ditch, the general amount is 75-100 kg per acre or nitrogen, phosphorus, potassium compound fertilizer 50 kg or urea, superphosphate, potassium sulfate 25 kg. The top dressing fertilizer generally should be applied three times. The first dressing should in the period when young height of about 30 cm, with 1-2 branches. The top dressing fertilizer mainly is nitrogen fertilizer, per acre can be applied 20kg ammonium sulfate or diammonium phosphate.
Before and after the beginning of
autumn, ginger seedlings in the three-fork period, this time is the turning point of ginger growth, and also the important period of nutrient absorption. The topdressing of ginger is very important, since then, plant growth will accumulate. Therefore, the ginger demand for fertilizer and water will increase.
The top dressing play an important role in promoting root growth as well as the fertilizer should be more and with comprehensive nutrient and lasting effect. The long-term farm manure and quick fertilizer should be applied in combination. Per acre with 70-80 kg of crushed cake fertilizer, or decomposed high-quality manure 500 kg, compound fertilizer 25-50 kg.
The article is quoted from: http://www.fert.cn/news/2017/09/20/142916891482.shtml
The previous: Four Key Points of Fertilizer Selection