However, the irrigation of urban parks is mostly extensive and empirical, due to the inconsistent and inaccurate measurement of BWR under practical circumstances, and the lack of precise weather data.

• 但由于实际条件下的公园植物需水难以连续、准确测定，且多数公园缺乏高精度气象数据，因此目前公园的灌溉粗放，经验性强。