Zonal Pattern Research on Rice Controlled Irrigation Based on ArcGIS and Geostatistics
The zonal digitization of observation data of station is very important for optimization,collocation and high efficient utilization of agricultural resources in irrigation zonal research.This paper using 51(1952-2002) years of mean growing period precipitation,≥10℃ s cumulative temperature,frostless season and quantity of percolation,2004-2005 growing period water demand and irrigation ration of controlled irrigation rice,at the same time taking physiognomy into consideration as data sources,we combined the methods of factorial analysis and spatial interpolation to regionalize controlled irrigation variables in Heilongjiang Province,based on ordinary Kriging method realize discrete datum to consecutive expression.Using factorial to analyze multiple index,the result is that physiognomy and irrigation ration are primary factors,≥10℃ s cumulative temperature,frostless season are secondary factor,growing period precipitation is the third factor,and afterward the growing period water demand and quantity of percolation.We build controlled irrigation rice zonal by ArcGIS to superimpose zonal of each primary factor under this sequence.This zonal can reflect the variety of study area rice controlled irrigation present state and development level,and it has important meaning to precision irrigation system simulating,engineering programming,developing stratagem and decision management.
rice controlled irrigation zonal ArcGIS geostatistics factorial analysis
Guo Longzhu Lv Chunbo Peng Shizhang Jiao Xiyun Zhang Ruimei
State Key Laboratory of Hydrology-water Resources and Hydraulic Engineering,Hohai University,Nanjing Water Conservancy Bureau of Heilongjiang,Harbin,150010,China
国际会议
南京
英文
198-202
2006-08-16(万方平台首次上网日期,不代表论文的发表时间)