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为了提高农田地力分等定级评价成果服务于农业生产的作用,必须加强其与耕地地力评价、测土配方施肥工作的交叉分析和综合应用。该研究以浙江省富阳市为样区,利用各种空间数据处理工具,以1∶1万大比例土地利用现状图为评价单元,运用层次分析法和加权指数求和法计算出耕地的综合地力指数,生成耕地质量评价等级图,最后通过施肥模型来分析全市肥料利用量趋势和制定农田合理施肥总体方案。研究综合分析数据显示,富阳市农田主要以中等农田为主,其中二级和三级农田面积占总农田面积的80.92%,而四级农田仅占总农田的5.59%,富阳市农田质量整体情况良好,具有很强的农业生产优势。同时,本研究提出的施肥方案比原始的平均施肥方案有明显的增产能力。
In order to improve the function of farmland grading and grading evaluation service in agricultural production, it is necessary to strengthen its cross-analysis and comprehensive application with the evaluation of cultivated land productivity and soil testing and formula fertilization. Taking Fuyang City of Zhejiang Province as a sample area, using the spatial data processing tools, a 1: 10000 large-scale land use status map was taken as the evaluation unit. The integrated land use of AHP was calculated by AHP and weighted index summation Index, generated a grading map of cultivated land quality evaluation, and finally through the fertilization model to analyze the trend of fertilizer utilization in the city and to develop the overall plan of rational fertilization in farmland. The comprehensive analysis shows that the farmland in Fuyang City is mainly medium farmland, of which the secondary and tertiary farmland area accounts for 80.92% of the total farmland area, while the fourth grade farmland accounts for only 5.59% of the total farmland area. The overall farmland quality in Fuyang City Good, with strong agricultural production advantages. At the same time, the fertilization scheme proposed in this study has obvious yield increase ability than the original average fertilization scheme.