| Fuzzy mathematics is a kind of math of studying and solving fuzziness appearance. It is first put forward by L.A.Zadeh in America California University in 1965 in the thesis Fuzzy Set. Information and Controe, it describe and studies fuzziness appearance in exact math methods, it is the strench and extend of the exact math, it makes the studying realm and useful realm of math improve to fuzziness appearance from distinct appearance, it makes the development of math improve to a new stage. It banished to fuzziness realm of classical math, it spreads the useful range and improves the strength of lives greatly.There is a lot of fuzziness appearance in agriculture study, fuzzy mathematics is widely used in agriculture. For example, the choice and planting in the kinds of crops,the classify of soil source,the synthesize appraise in agriculture machinery,the analyse of the condition of agriculture climate,the protect of agriculture enviroment,the survey of agriculture disaster,etc, all of above need the methods of fuzzy mathematics to solve. The methods of fuzzy mathematics is often used in agriculture study are: Fuzzy pattern recognition,fuzzy cluster analysis and fuzzy comprehensive evaluation.
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