定量研究材料由两部分组成：第一部分是西北农林科技大学农学院本科二年级的60份调查问卷。
The quantitative study consists of two parts : The first is the 60 copies of the questionnaire from the sophomores of the agronomy in Northwest University of Agriculture and Forestry , which is made up of three sections .
西北农林科技大学农学院