内蒙古河套灌区枸杞微咸水利用模式模拟及环境预测

Light-saline Water Use Pattern Simulation for Lycium Chinese and Environmental Prediction in Hetao Irrigation District Inner Mongolia

为寻求内蒙古河套灌区主要经济作物枸杞的微咸水利用模式,在田间试验的基础上运用SWAP模型对枸杞不同咸淡水轮灌模式进行了模拟研究,并对环境进行预测。结果表明,2淡1咸轮灌模式中,淡淡咸模式在枸杞盛果期盐分较低,对枸杞产量影响较小;2咸1淡轮灌模式中,淡咸咸模式在枸杞盛果期盐分较低,对枸杞产量影响较小。本着最大限度节约淡水资源的原则,选定淡咸咸为最优轮灌模式。淡咸咸5a预测显示,5a后土壤盐分增幅不大,能够达到盐分进出平衡。因此,淡咸咸模式为该地区枸杞较好的咸淡水轮灌模式。

In order to seek light-saline water use pattern for wolfberry which is major cash crop in Hetao Irrigation District Inner Mongolia,this research simulated the wolfberry under the different rotating irrigation simulation with saline water and fresh water by SWAP model based on the experiments in fields and made predictions for the environment.The results showed that the pattern of light light-salty＇s salt content was relatively small in the irrigation simulation of 2light and 1salty during the full productive age of wolfberry.the pattern of light salty-salty＇s salt content was relatively small in the rotating irrigation simulation of 2salty and 1light during the full productive age of wolfberry.Based on the principle of maximum save fresh water resources,selected light salty-salty as the optimal rotation irrigation mode.The light salty-salty mode prediction of five years showed that the soil salinity increase rarely,the salinity almost achieved the balance condition in terms of in and out after the fifth year.Therefore,the pattern of light salty-salty is the optimal irrigation mode to wolfberry in the district.