摘要
采用FAO推荐的Penman-Monteith公式计算了石河子垦区ET0。结果表明,50年来ET0整体呈上升趋势,按照气候变化的特点划分二个阶段,第一阶段ET0的相关性弱于第二阶段,1987年后ET0递增趋势明显。ET0与棉花单产的关系在第二阶段明显强于第一阶段,ET0与灌溉水量也呈正相关。结合Thornthwaite-Memorial计算气候生产潜力,分析与棉花单产的关系也有类似结果,即1987年后气候变化对棉花单产有明显促进作用,棉花单产还有很大的提升空间。
In this paper,FAO56-PM formula was used to calculate the ET0 of the Shihezi area,the results show that the overall trend of ET0 during 50 years is upward,two phases were classified in accordance to the characteristics of climate change,the correlation of ET0 in the first phase is weaker than in the second,ET0 increases significantly after 1987,and the relationship between cotton yield per unit area and ET0 is stronger in the second phase,ET0 and irrigation water amout are also positively correlated.Using Thornthwaite-Memorial to calculate the climate productive potential,analysis of its relationship to cotton yield per unit area have similar results.That is to say,climate change after 1987 has caused higher cotton yields,and still has more room for improvement.
出处
《灌溉排水学报》
CSCD
北大核心
2011年第3期47-50,共4页
Journal of Irrigation and Drainage
基金
国家自然科学基金项目(30900865)
国家科技支撑计划项目(2011BAD29B09)
石河子大学"263"项目(SL04011
SL05018)
关键词
石河子垦区
棉花单产
ET0
气候生产潜力
Shihezi area
cotton yield per unit area
ET0
climate productive potential
