水,是构成植物体的組成部分,也是植物生活过程中从外界环境吸取营养物质或进行一切生理过程所不可缺少的介质。因此,植物的生长与水分条件的关系是非常密切的。植物吸取水分主要通过土壤,而土壤中供給植物需要的水,經常是由其他方面补給的,这就是大气降水、地面径流和地下水。在不同的气候条件下,地下水的补給情况是不一样的,在降雨多的湿潤地区,植物生长 Water is an integral part of the plant body and is also an indispensable medium for drawing nutrients or performing all physiological processes from the external environment during the life of a plant. Therefore, the relationship between plant growth and water conditions is very close. Plants absorb moisture primarily through the soil, and the water that is supplied to the plants in the soil is often replenished by other means, namely, precipitation, surface runoff and groundwater. Under different climatic conditions, groundwater recharge is not the same, in wet and humid areas, plant growth