Abstract: The leading function of Xinjiang agriculture has compound features in terms of spatiality and combination. It is necessary to explore a new comprehensive assessment method which is adaptive to assess the orientation of the leading function of its agriculture with compound features and the structure of primary and secondary function so as to ensure the regional planning of Xinjiang agricultural function is scientific, reasonable and practicable. The article employs the method of Fuzzy Comprehensive Assessment (FCA) and builds a Comprehensive Assessment Model based on the study of the comprehensive assessment indices of Xinjiang agricultural function. The value of each agricultural function, namely, function of agricultural products supply, function of providing employment and livelihood security, function of ecosystem adjustment, and function of residents recreation and culture inheriting, of the 88 counties was calculated and sorted in term of the value respectively, then the importance degree of every county's each agricultural function to Xinjiang was ranked. Through comparing the rank of the four functions of each county in Xinjiang, the importance degrees of the four agricultural functions to every county were obtained. According to the rank results of FCA, combined with the results of questionnaire investigation and expert consultation, the leading function orientation scheme of Xinjiang agriculture which covers the 88 counties was put forward. To precisely define the compound features of the leading function of Xinjiang agriculture, the compound leading function of each planning unit was determined by the functions which rank the first two positions in the four functions, and the leading functions of Xinjiang agriculture were classified into four types of compound function. The orientation scheme was well confirmed to the reality of Xinjiang, shows that the method of combining FCA with qualitative analysis is one of the effective ways to assess the orientation and planning of the leading function of Xinjiang agriculture with compound features. The research results would provide a scientific basis for the government making differential strategy and countermeasures to optimize the structure of agricultural industry as well as the planning of the Xinjiang agriculture with different leading function.

Key words: Xinjiang, agriculture, leading function, orientation, regional planning, fuzzy comprehensive assessment