A PRELIMINARY STUDY OF THE EFFECTIVE IRRIGATION QUALITY INDEX SYSTEM OF FIELD WATER APPLICATION
有效田间灌水质量指标体系初探

This paper first sets up the concept of the effective irrigation quality index system of field water application. The authors hold that the traditional irrigation quality index system of field water application lacks reasonable theoretical grounds and is inadequate to reflect the relationship between irrigation quality and crop production because it only describes irrigation quality by the depth of water infiltrated through soil surface. It is suggested to study the useful water volume of the total applied water and the effective distribution of this part of water, and then to establish an effective irrigation quality index system of field water application. The con-.cept of the effective irrigation quality index system of field water application and the current achievements in this field are discussed systematically in this paper. At last, the stochastic and timespace problems in irrigation quality index system of field water application are also analysed.