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当前位置: 首页 > 文章 > 耕地适宜性评价与施肥推荐研究——以金坛市小麦为例 中国土壤与肥料 2012 (5) 61-66
Position: Home > Articles > Cultivated land suitability evaluation and fertilization——An example of wheat from the Jintan region Soil and Fertilizer Sciences in China 2012 (5) 61-66

耕地适宜性评价与施肥推荐研究——以金坛市小麦为例

作  者：
李勇;邱淑芬;朱荣松
单  位：
江苏省金坛市农林局土肥站
关键词：
耕地适宜性评价;层次分析模型;隶属度模型;数字化施肥
摘  要：
通过构建小麦适宜性评价模型,对小麦耕地适宜性进行分等定级,在此基础上探讨了小麦数字化施肥技术。评价体系选取障碍层类型、排涝模数、pH等16个评价指标,构建5个准则层,采用层次分析模型和隶属度模型,通过加法模型计算出耕地地力综合指数,将小麦适宜性分4个等级。高度适宜面积占总耕地面积的31.7%,适宜面积占48.3%,勉强适宜面积占12.1%,不适宜面积占7.9%。根据适宜性评价结果,结合小麦施肥参数,制定2个小麦肥料配方(N-P2O5-K2O)15-15-10、18-12-10。实践表明,该方法较传统施肥减少N投入55 kg/hm2,氮肥利用率较习惯施肥的33.2%提高到37.7%。
译  名：
Cultivated land suitability evaluation and fertilization——An example of wheat from the Jintan region
作  者：
LI Yong,QIU Shu-fen,ZHU Rong-song(Soil and Fertilization Station of Jintan City,Jiangsu Jintan 213200)
关键词：
cultivated land suitability evaluation;hierarchical analysis model;membership function model;digital fertilization
摘  要：
This paper constructed a wheat suitable assessment model for land classification and gradation,and the wheat digital fertilization technique was discussed on this basis.16 indexes were selected including the barrier layer type,draining modulus and pH,etc.And it was constructed into 5 hierarchical layers in this evaluation system.According to the integrated fertility index of cultivated land,the wheat lands were divided into four grades,that was highly appropriate area accounted for 31.7%of the total cultivated land,appropriate area accounted for 48.3%,and barely suitable area accounted for 12.1%,not suitable area accounted for 7.9%.On the basis of suitable assessment,regulation of fertilizer needed and fertilizer strategy model,the paper made two fertilizer formulas(N-P2O5-K2O)15-15-10,18-12-10.Practice showed that compared with conventional fertilization,recommended fertilization reduced nitrogen 55 kg/hm2,but increased N use efficiency from 33.2% to 37.7%.

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