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中国农学通报
采用SPAD仪进行甜菜氮素营养诊断技术研究
王秋红,周建朝,王孝纯
Diagnostic Technique of Sugarbeet Nitrogen Nutrient Status Using SPAD-502 Chlorophyll Meter
Wang Qiuhong,Zhou Jianchao and Wang Xiaochun
中国农学通报 . 2015, (36): 92 -98 .  DOI: 10.11924/j.issn.1000-6850.casb15090014