摘要
以影响根系吸水强度的三大要素即作物蒸腾强度、土壤含水率和根系分布密度为影响因子,结合土壤水动力学理论得到的根系吸水率,建立了控制性隔沟交替灌溉条件下玉米的二维根系吸水模型,并进行验证得到较好的结果。模型对预报控制性交替灌溉具有重要的理论及实用价值。
In this paper,root samples of spring maize under controlled alternative irrigation were taken with Multiple linear regression,and the two-dimensional spatiotemporal distribution functions of spring maize root biomass was established.Based on theory of soil water dynamics,two-dimensional root water uptake model was established,and this method was verified better.And the validation tests demonstrated that the function was available to describe the real growth status of test crops root systems.
出处
《灌溉排水学报》
CSCD
北大核心
2012年第5期132-135,共4页
Journal of Irrigation and Drainage
基金
河南省教育厅自然科学研究计划项目(2011B570007)
水利部黄土高原水土流失过程与控制重点实验室开放课题基金资助项目(201205)
关键词
控制性交替灌溉
玉米
根系吸水模型
controlled alternative irrigation
maize
root water uptake model
