Correlation of Environmental Factors for Drip Irrigation Device Block in Yellow River Irrigation Districts

DU Hui-hui;MA Tai-ling;YU Jian;SONG Yao-xing;College of Management,Sanya University;School of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University;Water Conservancy Science Research Institute of Inner Mongolia;

drip irrigation device block;;correlation analysis;;turbidity;;environment factor;;SPSS software

Based on the water quality determination results of three different settling basin in Wuhai city in May to October of 2013,with correlation of the main factors,including sediment and other related indexes,which influence the drip irrigation device block,as the main research object,the SPSS statistical analysis software is applied for correlation analysis. The results show that the total number of bacteria and turbidity is significantly positively related to sediment,which means that sediment is the carrier of the bacteria thrives,and the sediment content of sedimentation tank determines the total number of bacteria; Chlorophyll a has negative correlation with turbidity,which means that sediment concentration affect the growth of algae in water and the effect is not very big,and the correlation is not obvious. CODMn,nitrogen and phosphorus are greatly influenced by turbidity,extending the residence time is good for adsorption of sediment precipitation. Sediment sinking to the bottom contains Large quantity of N,which will be released to water under certain condition; the change of TP content in water has linear relation with the sediment concentration; the bigger sediment content,the faster absorption speed; the bigger TP content,the more easily for TP be absorbed by sediment; meanwhile,it is proved that as long as there exists sediment particle in water,the sediment will inevitably be attached by bacteria.