通常在海拔500~1 200米山区种植的茭白称为高山茭白,主要利用夏季高山气温相对较低,能保证茭白正常孕茭。高山气温随着海拔升高而降低,海拔每升高100米,气温下降0.4~0.6℃,而山区又通常采用溪水和泉水灌溉,田间温度可明显降低,特别是7—9月的平均气温在海拔500~1 200米的山区,可比平原低3~6℃,而田间水温则可降低5~10℃。这种气候凉爽,空气湿 Commonly planted in the mountains of 500 ~ 1200 meters above sea level is called albacore white, the main use of summer alpine temperature is relatively low, to ensure the normal pregnant cathartes. The alpine temperature decreases as the altitude increases, and the temperature drops 0.4 ~ 0.6 ℃ for every 100 meters above sea level. However, the mountainous areas are usually irrigated with streams and springs, and the temperature in the field can be significantly reduced. Especially, the average temperature in July-September is between The elevation of 500 ~ 1200 meters in the mountains, 3 ~ 6 ℃ lower than the plain, while the field water temperature can be reduced 5 ~ 10 ℃. The climate is cool and the air is wet