备耕头水地土壤入渗参数的线性预报模型  

The Linear Prediction Model of Soil Infiltration Parameters for Preparation Land of First Irrigation

作　　者：岳海晶[1] 樊贵盛[1] 

机构地区：[1]太原理工大学水利科学与工程学院,太原030024

出　　处：《中国农村水利水电》2016年第2期21-26,共6页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(40671081);山西省科技攻关项目(20100311124);文峪河水库高效调度运行方案研究(2010-2012)

摘　　要：为了提高备耕头水地的灌溉质量,基于黄土高原区大田备耕头水地土壤入渗试验数据样本,采用线性回归分析的方法,建立了是否考虑备耕头水地灌溉前后地表土壤结构变形条件下的Kostiakov三参数入渗模型参数的线性预报模型。最终研究出预测备耕地入渗参数的两种方案,将两种方案各参数预测值的平均误差以及给定时间下的土壤入渗率的平均误差进行比较,结果表明:两种方案均能进行备耕头水地入渗参数预测,直接预测法的平均误差低于间接推求法,能将平均误差控制在15%以下,在条件允许的情况下优先选用直接预测法较好。In order to improve the irrigation quality of preparation land,the prediction model is established to forecast the infiltration parameters of Kostiakov in three parameters by means of the multivariate linear regression method based on the soil infiltration experiment sample data of the Loess Plateau in fields,whether to consider the deformation of surface soil structure before and after irrigation is required.Finally,two kinds of schemes are established,then the average error of corresponding model parameters and the average error of infiltration rate at a given time are compared,the results indicates that both schemes are suitable to forecast the infiltration parameters of preparation land,but the average error of the direct prediction method is lower than the indirect calculation method,the former method may control the average error below 15%.The direct prediction can better predict soil infiltration parameters for preparation land of first irrigation if the conditions permit.

关 键 词：土壤结构变形 Kostiakov三参数入渗模型 线性预测模型 误差分析 土壤理化参数 

分 类 号：S152.72[农业科学—土壤学] TV93[农业科学—农业基础科学]