摘要
用联合国粮农组织（ＦＡＯ）最新推荐的彭曼－蒙蒂斯模式（ＦＡＯ－ＰＭ）计算甘肃河东１０个代表站点的冬、春小麦的需水量。并据此分析了该地区冬、春小麦的需水规律及分布特征：在甘肃河东雨养农业区，冬小麦全生育期平均需水量为３５２．２ｍｍ；春小麦为３２４．８ｍｍ，需水量均明显高于同期降水量；无论冬、春小麦，在其整个生育时段中，最大需水量均在开花－乳熟时段，日平均需水量达５ｍｍ左右；
stations’ wheat Crop Water Requirements (CWR) in Hedong Region of Gansu Province were calculated applying the FAO Penman Monteith equation (FAO PM) provided by UN FAO. Based on the result, analysis was made to find out the CWR laws and their distributinon behavior: In this region, the winter wheat season’s mean CWR is 352.2 mm; the spring wheat season’s average CWR is 324.8mm. They are all higher than precipitation in same time. For either winter or spring wheat, in the whole growth stages, the maximum CWR is in the period from the blooming to the milky maturity stage, being about 5 mm/day. The region’s CWR distribution behavior is degressive from north to south in Hedong Region of Gansu Province.
出处
《干旱地区农业研究》
CSCD
北大核心
1999年第1期39-44,共6页
Agricultural Research in the Arid Areas
基金
国家科委96-908-05-03-04项目
关键词
小麦
需水量
甘肃河东
wheat
crop water requirement
Hedong Region of Gansu Province
