Fuzzy mathematics is developed rapidly in recent years particularly in the field of environmental engineering applications, but it is still relatively small in the application of bioengineering water-saving technology.In this paper, mathematical modeling and fuzzy comprehensive evaluation model was combined to explore the water deficit law of upland rice under RDI for finding a more efficient water-saving, cost-effective bio-engineering program, this will yield the uncertainty of a lot of factors that affect the composition into certainty, ...
