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烟台苹果产区土壤有机质和pH分布特征及其与土壤养分的关系
葛顺峰 郝文强 姜翰 魏绍冲 姜远茂
Distribution Characteristics of Soil organic Matter and pH and the Correlation to Soil Nutrients in Apple Orchards of Yantai
中国农学通报 . 2014, (13): 274 -278 .  DOI: 10.11924/j.issn.1000-6850.2013-2514