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崇庆县早在三、四十年代就引种桉树,解放以来逐年发展,越来越普及。到一九七二、七三年时,桉树已占全县所有公路行道树的98.5%,占干、支、斗农渠道树木的70%左右。就绿化公路而言,共有省、县、社道和厂矿专用公路43条,长350公里,其中省、县道13条,173公里。七二年前省县道上只有行道树不足2万株,每公里平均只有一百多株树木,
Chongqing County introduced eucalyptus as early as the 1940s and 1940s and has been growing year by year since its liberation. By 1972 or 1973, Eucalyptus accounted for 98.5% of the total number of road trees in all the roads in the county, accounting for about 70% of the trees in dry, branch and agricultural roads. In terms of greening roads, a total of 43 provincial, prefectural, social and industrial roads and mines, a total length of 350 kilometers, of which 13 provinces and counties, 173 kilometers. Only seven or two years ago, provincial and county roads only had fewer than 20,000 trees, with an average of only about 100 trees per kilometer.