The paper analyzes the causes of low accuracy by manual filling liquid hydrocarbon into tanks on railway cars,thus puts forward to adopt static railway track scale and computer control system to realize quantitative filling.

Based on this, mechanism of influence of irrigating water quota to field water utilization coefficient was discussed.

In this paper,field soil water balances in root zone is simulated by using one\|dimensional variable saturated water flow model under the condition of different hydrographic year and irrigation requirement for summer corn during different growing stage.

Experimental research on evaporation from perforated plastic mulch with different irrigation quotas;

Experiment research on irrigation quota effect on nitrogen transformation under film hole irrigation for corn

Effect of irrigation quota on soil nitrate nitrogen concentration under surge irrigation