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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