国家“863”计划 (2013AA102401)、国家科技支撑计划(2012BAH29B04)和陕西省耕地地力评价项目资助
赵业婷,李志鹏,常庆瑞,齐雁冰.基于Cokriging的耕层土壤全氮空间特征及采样数量优化研究[J].土壤学报,2014,51(2):415-422. DOI:10.11766/trxb201305130228. zhaoYeting, Li Zhipeng, Chang Qingrui, Qi Yanbing. Study on spatial distribution of total nitrogen in arable soil layer and optimization of number of soil samples for the study based on Cokriging[J]. Acta Pedologica Sinica,2014,51(2):415-422.
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