%0 Journal Article
%T Utilization Efficiency of Chemical Fertilizers among Different Counties of China<br>中国化肥利用率的区域分异
%A CHEN Tongbin
%A ZENG Xibo
%A HU Qingxiu
%A <br>陈同斌
%A 曾希柏
%A 胡清秀
%J 地理学报
%D 2002
%I 
%X According to the grain yield response to fertilizers, China's fertilizer application rate can be classified into 3 typical regions: (1) the maximum fertilizer input region including 11 Eastern provinces (ER region); (2) the middle fertilizer input region covering mainly 10 Middle provinces (including Xinjiang and Gansu) (MR region); and (3) the low fertilizer input region consisting of 9 Western provinces (WR region). The average fertilizer application rate per ha cultivated land (sowing area) in 674 counties of ER region was 329 kg/ha, the average rate in the 973 counties of MR region was 231 kg/ha and that in the 709 counties of WR region was 231 kg/ha (Fig.1). The maximum application rate in some counties of China was found to be as high as 2,241 kg/ha which was nearly 10 folds of the average of whole China, i.e., 238 kg/ha. According to the response of grain yield to fertilizers, there were 11.9% excessive-fertilized counties which should reduce their fertilizer application rate and 14.6% counties which were not necessary to increase fertilizer application rate in China.
%K chemical fertilizer
%K fertilizer utilization efficiency (FUE)
%K consumption
%K grain production
%K regional difference
%K China<br>中国
%K 化肥
%K 利用率
%K GIS
%K 区域差异
%K 地理信息系统
%K 农业
%K 可持续发展
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=F7B5B947C24B9D649491012214E4BEF4&aid=5DD0CEDEB99F216A&yid=C3ACC247184A22C1&vid=11B4E5CC8CDD3201&iid=94C357A881DFC066&sid=20ADD38F841C6A4B&eid=E49BED2EA9A8956B&journal_id=0375-5444&journal_name=地理学报&referenced_num=52&reference_num=35