And the ethical deficiencies in the actual system and the overgeneralization and deviation of system pose the problems for the institutional imparting.

Aanalysis on irrigation system at irrigating area of Mopan Mountain in Wuchang City;

Establishment of brackish water irrigation system with multi-target policy;

Study of main crop irrigation system from meteorological factors in Litong region of Ningxia irrigation area;

Analyses of irrigation scheduling and water balance for irrigation district in lower reaches of Yellow River;

Saline water irrigation scheduling method based on crop-salt-water production function;

The optimum irrigation scheduling for rice with stochastic rainfall under limited water supply;

Several issues in irrigation schedule design;

Optimal irrigation schedule model of forage crop by RAGA-DP under deficit irrigation;

Optimization of irrigation schedule based on hyperplane real coding genetic algorithm;

On the basis of this, six irrigation models were formulated,choosing method for water saving irrigation procedure was proposed.

Combined with material of tobacco water-saving irrigation experiments in Enshi Autonomous Prefecture,Hubei Province,the authors optimally designed the irrigation procedures of tobacco in different typical years based on the successive asymptotic of dynamic programming.