Field experiments were conducted to study cotton nitrogen diagnosis and topdressing recommendation by measuring cotton tissue NO 3 - concentration with Reflectoquant .
应用反射仪测定棉株叶组织硝态氮含量，研究了硝态氮作为棉花氮营养诊断和追肥推荐指标的可行性。
Field experiments were conducted to study cotton nitrogen diagnosis and topdressing recommendation by measuring cotton tissue NO 3 - concentration with Reflectoquant .
应用反射仪测定棉株叶组织硝态氮含量，研究了硝态氮作为棉花氮营养诊断和追肥推荐指标的可行性。
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