摘要
本文在作物水盐生产函数和农田水盐动态模型基础上,以单位面积纯收益最大为目标函数提出了制定咸水灌溉制度的模型。以山西省永济市试区进行的棉花咸水灌溉试验资料为依据,求得了有关模型的参数;利用该试区35年系列的旬降雨、旬蒸发量资料,对3种不同灌水时间和灌水次数、7种灌溉咸水浓度,共计49种可能组合的农田土壤盐分和产量进行了模拟,并与该试区大田试验数据进行了比较。结果表明该模型合理可靠。以模拟产量为依据,在对当地深井和浅井灌溉效益分析的基础上,提出了咸水灌溉制度及其相应的地下水开发利用策略。
On the basis of crop-water-salt production function and water-salt transport model,the maximum yield per unite area is taken as the target function to establish the model for saline water irrigation scheduling.The experimental data from Yongji City irrigation area,Shanxi Province,are used to obtain the parameters of the model.The comparison of predicted result with large area field irrigation data shows that the model is reliable.By using this model the schedule of saline water irrigation and corresponding strategy for groundwater development and utilization are proposed according to the analysis on irrigation profit obtained from utilizing deep wells or shallow wells.
出处
《水利学报》
EI
CSCD
北大核心
2004年第6期46-51,共6页
Journal of Hydraulic Engineering
基金
国家自然科学基金重点项目资助(50339030)
关键词
咸水灌溉
灌溉制度
作物水盐生产函数
水盐动态
saline water irrigation
irrigation scheduling
crop-water-salt production function
soil salt and water transport
