Q/I Characteristics of potassium are important indices to indicate soil potassium status, and can measure both the intensity and quantity of soil K at the same time.
钾素Q/I特性是表征土壤钾素状况的一个重要指标，它能同时度量土壤钾素的强度和容量。
The influence of three fertilizer structures on the status of nitrogen, phosphorus and potassium in paddy soil derived from red earth was studied.
本文论述了三种肥料结构对红壤性水稻土氮磷钾养分状况的影响。
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