The yield effect,water consumption and water use efficiency of corn were analyzed under different norm and frequency of supplementary irrigation,the results indicated that the difference between supplementary irrigation norm and frequency was significant,between water consumption and yield was also.

Comparison of three kinds of indices for calculating optimal irrigation quota;

Rational irrigation quota under limited water supply;

Spatial variability of rice irrigation quota and comprehensive irrigation quota in Yunnan Province;

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.

Water saving irrigation norm model and its solutions;

An experiment was carried out in a solar energy greenhouse to study the effects of irrigation norms and water stress at different growth stages on the yield of tomato.

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