Ginger root growth if there might be bad due to the following reasons: 1, the basal administered not fully fermented decomposition of organic fertilizer (manure, manure, urine pig, sheep, cow, rabbit manure, soybean meal, soybean meal, cooked beans, peanut cake, etc.). 6-7 months is the hot season, the ground temperature is high, slowly fermented organic fertilizer in the soil, releasing large amounts of heat, capillary damage ginger root root root reduces the ability to absorb water and nutrients, resulting in yellow leaves stem tip, leaf and other symptoms. 2, basal administered a large amount of urea, compound fertilizer and other fertilizer, fertilizer application or substandard quality, contain harmful elements, toxic gases - ammonia, resulting in burning roots, resulting in yellow leaves, stem tip, leaf and so on. 3, administered the basal inferior bio-organic fertilizer, bio-fertilizer, etc., but these are not suitable for big ginger fertilizer base fertilizer, they will have an adverse effect on the growth of ginger bud. 4,6 months late, the number of one-time dressing too much fertilizer (50-100 kg / acre), or substandard quality of fertilizers containing harmful elements, toxic gases - ammonia, resulting in burning roots. 5, the temperature is high, the light is too strong, leaf transpiration water loss is more, but this time is a big ginger root growth and development in the early stages, the ability to absorb moisture is weak, resulting in root absorption of water is insufficient to meet leaf transpiration water loss , resulting in a dry leaf tip.