浙江省东阳市参考作物腾发量分析数据

该数据主要通过采集智慧农业气象站设备上的温度、湿度、风速等数据，分析计算参考作物腾发量ET0，为农田水分盈亏分析提供数据支撑，指导农田科学灌溉和排水，从而提高作物的产量和质量。1、数据来源
通过智慧农业气象站设备实时采集空气温度、湿度和风速,以一定采集周期上传即时数据。
2、数据处理
对采集到的数据进行去重、合并，按照区域分类、统计处理，计算出每日太阳净辐射量（W/m²）、平均温度（℃）、平均风速（m/s）、平均饱和蒸汽压（Pa）、环境湿度（%rh）、大气压值斜率、空气湿度等参数，基于这些参数，计算参考作物腾发量ET0：
ET0=0.408*（每日太阳净辐射量-土壤热通量）*大气压值斜率/（大气压值斜率+（空气湿度常数*（1+0.34*平均风速）））+900*平均风速/（平均温度+273.15）*（平均饱和蒸汽压-环境湿度）*空气湿度常数/（大气压值斜率+（psy*(1+0.34*平均风速）））
3、数据应用：通过长期ET0数据跟踪与分析，实现对该区域农田的蒸发蒸腾监测，为灌溉和排水提供数据支撑，从而提高作物的产量和质量。

This dataset primarily collects data such as air temperature, humidity and wind speed from smart agricultural meteorological station equipment, analyzes and calculates the reference crop evapotranspiration (ET0) to provide data support for farmland water surplus and deficit analysis, guide scientific farmland irrigation and drainage practices, and ultimately enhance both crop yield and quality.

1. Data Source
Real-time collection of air temperature, humidity and wind speed is conducted via smart agricultural meteorological station equipment, with real-time observation data uploaded at a fixed collection interval.

2. Data Processing
The collected raw data are subjected to deduplication, merging, regional classification and statistical processing. The following agro-meteorological parameters are calculated: daily solar net radiation (W/m²), average air temperature (℃), average wind speed (m/s), average saturated vapor pressure (Pa), ambient relative humidity (%rh), atmospheric pressure slope and air humidity. Based on these parameters, the reference crop evapotranspiration ET0 is computed using the following formula:
$$ET_0 = 0.408 imes frac{(Daily Solar Net Radiation - Soil Heat Flux) imes Atmospheric Pressure Slope}{Atmospheric Pressure Slope + Psychrometric Constant imes (1 + 0.34 imes Average Wind Speed)} + 900 imes frac{Average Wind Speed}{Average Temperature + 273.15} imes (Average Saturated Vapor Pressure - Ambient Relative Humidity) imes frac{Psychrometric Constant}{Atmospheric Pressure Slope + Psychrometric Constant imes (1 + 0.34 imes Average Wind Speed)}$$
Note: Psychrometric Constant is the standard scientific term for the "air humidity constant" mentioned in the original dataset description, a widely used parameter in agro-meteorological calculations.

3. Data Application
Through long-term tracking and analysis of ET0 time-series data, evapotranspiration monitoring of farmlands in this region can be implemented, providing reliable data support for farmland irrigation and drainage management, thereby effectively improving crop yield and quality.