What are the growing condition requirements for ginger? A detailed explanation of key cultivation points
Ginger originated in tropical rainy forest regions and requires a shady, moist and warm environment. The suitable temperature during the growing period is 22-28°C. It is not cold-tolerant, and the aboveground parts die when exposed to frost. The underground parts also cannot tolerate low temperatures of 0°C. It is also not heat-tolerant; if the temperature is too high and sunlight is direct, growth is hindered, so shading should be provided in summer during cultivation. It has strict requirements for soil moisture and is not strongly drought-resistant. If drought persists for a long time, the stems and leaves wither and the ginger rhizome cannot expand, but if there is too much rain and field drainage is poor, it will cause excessive vegetative growth and ginger rhizome rot. Ginger's requirements for nitrogen, phosphorus and potassium fertilizers: potassium is needed the most, followed by nitrogen, and phosphorus the least. In addition to the nutrients supplied by the base fertilizer, topdressing is also needed. During the seedling stage, nitrogen fertilizer is mainly applied as topdressing. During the rapid expansion period of the ginger rhizome, organic fertilizer or compound fertilizer containing the three elements nitrogen, phosphorus and potassium should be supplemented. Ginger should not be continuously cropped. When cultivated in loam or clay loam rich in humus, the yield is relatively higher, but the pungent flavor is milder and the texture is more tender, making it suitable for harvesting young ginger for vegetable use. If cultivated in sandy loam with little humus, the yield is relatively lower, but the pungent flavor is stronger, making it suitable for use as seed ginger or for making ginger powder.