This thesis is a comprehensive study which includes basic study and applying study, and the main study methods are talking method and documents method.
本论文属基础研究与应用研究相结合的综合研究，研究方法主要是访谈法和文献法。
To raise breeding efficiency by applying comprehensive breeding methods.
综合运用多种育种技术，提高育种效率；
Rough set theory can be combined with multi other theories and methods, making use of both advantages and applying into comprehensive evaluation.
粗糙集能与其它多种理论和方法进行杂合，优势互补，共同用于综合评价。
Rough set theory can be combined with multi other theories and methods, making use of both advantages and applying into comprehensive evaluation.
粗糙集能与其它多种理论和方法进行杂合，优势互补，共同用于综合评价。
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