The results showed that the amount of absorbed nitrogen in different forms varied with nitrogen and potassium levels.

结果表明，水稻对铵态氮和硝态氮的吸收与养分供应状况有很大关系。

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Nitrogen and potassium fertilizer enhanced the nutrient uptakes, and the translocation of ca and Mg from side leaves to heads.

氮肥和钾肥提高结球甘蓝养分元素的吸收数量，促进边叶钙和镁向叶球转移。

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Pot experiment was conducted to study the effects of nitrogen and potassium on the yield quality and physiology indices of garden sass.

在盆栽试验条件下，研究了氮肥不同用量和氮、钾配施对大青菜产量、品质和生理指标的影响。

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The only way to increase yield was to find a way of supplying extra nitrogen, phosphorus and potassium to the soil.

ECONOMIST: The story of man's staple food

As he puts it, a cubic metre of regolith contains, besides the necessary oxygen, enough hydrogen, carbon, nitrogen, potassium and other trace elements to make two cheese sandwiches on rye, two colas and two large plums.

ECONOMIST: Spaceflight

They hired a scientist to come up with a formulation of chemicals that delivered nitrogen, potassium and phosphorus in highly water-soluble form, so that an impatient gardener could give plants an instant shot to the leaves, so to speak.

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