摘要
综合考虑研究区的气象及灌溉特点,将非充分灌溉条件下的作物需水量计算公式应用到作物虚拟水含量计算中,考虑到研究区灌溉农业与雨养农业的特点及灌溉水利用效率的差异,区分灌区与非灌区、井灌与渠灌,制定了相应的灌溉制度,并计算了区域农作物广义耗水量。给出了修正的农业虚拟水含量计算方法,并以郑州市为例验证了虚拟水含量的时空差异特征。
The meteorological and irrigation characters of research zone were considered comprehensively.The calculation formula of crop water requirement under insufficient irrigation condition was applied in calculating the virtual water content of crop.Considering the characters of irrigation farming and rainfed farming in research zone and the difference of utilization efficiency of irrigation water,irrigation area and non-irrigation area as well as well irrigation and drain irrigation were discriminated,their corresponding irrigation systems were established and the general water consumptions of zonal crops were calculated.The corrected calculation method of agricultural virtual water content was concluded and the space-time difference characters of virtual water content were validated with Zhengzhou City as an example.
出处
《安徽农业科学》
CAS
北大核心
2011年第8期4423-4426,共4页
Journal of Anhui Agricultural Sciences
基金
中国水利水电科学研究院重点实验室开放基金项目
河南省重点科技攻关计划项目(092102110032)
国家水体污染控制与治理科技重大专项(2008ZX07209-0022009ZX07106-03-01)
关键词
非充分灌溉
双作物系数法
无效水面蒸发
郑州市
Insufficient irrigation
Dual crop coefficient method
Nonavailable water surface evaporation
Zhengzhou City
