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《Journal of Jilin Agricultural Sciences》 2007-01
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Researches on the Evaluation of Integrated Soil Fertilities of Farmlan at County Level in Jilin Province and the Evaluation Index System Based on GIS——Taking Jiutai City for Example

HUANG Jian1,LI Hui-min1,ZHANG Hui-lin1,MA Bing1,SUN Yu-xin2, ZHANG Guo-en2, ZHU Jian-fei1 (1.The General Soil and Fertilizer Station of Jilin Province, Changchun 130112; 2. The General Soil and Fertilizer Station of Jiutai City, Jiutai 130500, China)  
On the basis of the investigation of farmland fertilities, the fertility of farmland in Jiutai city of Jilin province was evaluated using the GIS technique, fuzzy evaluation, level analysis, integrated indexes, etc. The results showed that the basic cultivated farmland (17.59 104 hectares) in the whole city can be divided into 6 grades, among which the IFI (Integrated fertility index) of the cultivated land at the first grade was bigger than 0.85. Its area was 2.07 104 hectares, accounting for 11.8% of total cultivated area. The IFI of the cultivated land at the second grade was between 0.8 and 0.85. Its area was 5.72 104 hectares, accounting for 32.5% of total cultivated area. The IFI of the cultivated land at the third grade was between 0.75 and 0.80. Its area was 2.49 104 hectares, accounting for 10.4% of total cultivated area. The IFI of the cultivated land at the fourth grade was between 0.70 and 0.75. Its area was 2.49 104 hectares, accounting for 14.2% of total cultivated area. The IFI of the cultivated land at the fifth grade was between 0.65 and 0.70. Its area was 1.84 104 hectares, accounting for 10.4% of total cultivated area. The IFI of the cultivated land at the sixth grade was less than 0.65. Its area was 0.98 104 hectares, accounting for 5.5% of total cultivated area. By adopting the method of induction, the evaluation index system of farmland fertility in Jiutai city was established.
【Fund】: 农业部全国“耕地地力调查与质量评价”项目(农财发[2004]26号)
【CateGory Index】: F323.211
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