宁夏南部山区小麦干旱监测与灾损评估模型研究

研究计算了宁夏回族自治区南部山区 1961～ 2 0 0 0年参考作物蒸散量 ,并利用FAO提供的山区小麦Kc值和历年小麦生育期资料模拟历年逐旬小麦需水量。通过土壤水分平衡方程各分量的订正 ,求算出历年小麦生长期间实际耗水量和水分满足率 ,运用包络产量和作物水分生产函数建立了小麦单产干旱监测与灾损评估模型 ,应用效果良好 ,可满足监测与灾损评估需要

A loss estimation model and drought monitoring of wheat in mountainous areas of South Ningxia

In this paper,the daily ET 0and ET care calc ul ated using K cand FAO-PM from 1961 to 2000,and the evapotranspiration in e very 10 days of wheat is estimated by the soil water balance equation.The real w ater consumption,as well as the degree of the water consumption and requirements of wheat during the growing season are established by using the soil water bala nce equation and means of correcting leakage of soil water and flow of precipita tion every year.Based on this work,a loss estimation method on monitoring drough t and estimating yield loss of wheat is established using functions of crop grow th water and max limit of yield.The results show that the effects is satisfied and suitable for monitoring drought and estimating yield loss of wheat on mounta inous areas of south Ningxia.