气象卫星资料在农田旱情监测中的应用

Application of Meteorological Satellite Data in Drought Monitoring

应用气象卫星ＮＯＡＡ的热红外资料，结合地面试验和气象资料，推求农田蒸散发量；以水量平衡为基础，配合作物用水量和干旱指标，获得农田土壤水分变化和干旱的分布，达到旱情监测的目的。

he evapotranspiration of the wheat fields is estimated by meteorological satellite's thermal infrared data in combination with measuring data on ground surface and conventional meteorological data.On the basis of water balance equation,the water requirement of the wheat and the drought index,drought monitoring is achieved through the consideration of variation of soils water content in the wheat fields and drought distribution.