北京地区冬小麦需水量计算方法的研究初报

一、引言国内外一些学者曾用田间试验和某些计算方法求算并研究作物需水量和需水规律。本文采用文献[3]中的有关公式和北京地区的气候,物候资料,应用电子计算机求算了北京地区通县、延庆,平谷、顺义、大兴、房山、古北口、门头沟、海淀等9个不同类型产麦县(区)的冬小麦生育期间逐旬的及全生育期的需水量。根据计算的系统需水量资料,对北京地区冬小麦需水量进行了时空分布特征的探讨。在对冬小麦需水量与降水量对比分析的基础上,对北京地区冬小麦的合理灌溉对策提出了几点看法。

THE INITIAL STUDY REPORT ON METHODS CAICULATING WATER REQUIREMENT OF WINTER WHEAT IN BEIJING AREA

With penman equation and the climatic as well as phenlogic data concerning Beijing area,in reference to methods presented in Literature 3,the water requirement of winter wheat in Beijing area was calculated in the computer for the whole growth period and for every ten days therein.Based on the results,the characteristics of the time and spatial expansion of the water requirement of winter wheat were discussed.Comparisons and analyses were made on the water requirement of winter wheat and rainfall.Suggestion...