一、周口地区产业结构的新变化 1、三次产业结构:一产比重下降,二、三产业比重上升。1991-1997年,反映经济总量的GDP有了较快的发展,年均增长12.7％,其中,第一产业年均增长9.2％,第二产业年均增长20.3％,第三产业年均增长8.6％,三次产业在经济总量中的比例关系,由1991年 First, the new changes in industrial structure Zhoukou area 1, three times the industrial structure: a decline in the proportion of primary production, secondary and tertiary industries increased. In 1991-1997, the GDP reflecting the total economy had a rapid development, with an average annual increase of 12.7%. Among them, the average annual growth of the primary industry was 9.2%, that of the secondary industry was 20.3% and that of the tertiary industry was growing at an average annual rate 8.6%, the proportion of three industries in the total economy by 1991