摘要
本文以甘肃、陕西、宁夏境內六个农业气象试验站非灌溉旱地的土壤湿度资料为基础,用简化水分平衡方程计算了农田蒸散量。对蒸发量进行相关分析,建立了估算蒸发量的经验关系。提出了度量农田土壤水分条件的指标形式。
Based on soil humidity information in rainfed farmlands from six weather stations in Gansu,Shaanxi and Ningxia,evaportraspiration from rainfed farmlands was calculated with simplified moisture equilibrium equatien in this paper. The amount of evaportranspiration was subject to correlation analysis, and also ,the empirical equation for calculation of evaportranspiration was established The paper presents the index form——SSM——SM for measuring farmland soil moisture conditions.
出处
《干旱地区农业研究》
CSCD
北大核心
1989年第1期34-39,共6页
Agricultural Research in the Arid Areas
