Results showed : ( 1 ) if the proportion of water in the soil is lower than wilting coefficient , and if irrigating water is very little , ( irrigating water is spreading horizontally and vertically ) the relationship between the horizontal width ( x ) and the ? rtical depth ( y ) is remarkable . the equation is y - 0 . 02 12x2 + l . 8546x - 17 . 88 . the related coefficient is r = 0 . 9350
2.
Because of the unreasonable restriction of actual models , soil water content at the end of the stage that its sensitivity parameter is small is always close to the wilting coefficient , this makes planting risk . to deal with the planting risk of inadequate irrigation schedule , this paper develops a new multi - objective model for inadequate irrigation schedule programming , and uses the staged multi - dimensional fuzzy optimization method to get the decision - making
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