城市地区虽然水热条件较好，除干旱地区外，年降雨量可达１０００ｍｍ以上，略大于年蒸发量。但受季风的影响，雨量集中，干湿明显。短期的干旱和高温，对花园草坪植物业生长极为不利。合理进行水份的平衡与调控，有利于花园草坪植物的生长，美化环境，对防治花园草坪的枯萎，具有重大意义 Although the hydrothermal conditions are better in urban areas, except for arid regions, the annual rainfall can reach more than 1000mm, slightly larger than the annual evaporation. However, due to the monsoon, the rainfall is concentrated and the wet and dry conditions are obvious. Short-term drought and high temperatures are extremely detrimental to the growth of the garden turfgrass industry. Reasonable water balance and regulation are conducive to the growth of garden turf plants, beautify the environment, and are of great significance in preventing and curing the rot of garden lawns.