Effects of Irrigation and Nitrogen Fertilizer Input Levels on Soil NO3 (-)-N Content and Vertical Distribution in Greenhouse Tomato (Lycopersicum esculentum Mill.).

Scientifica (Cairo) · 2016 · PMC5013227 · PMID 27642536

Europe PMC DOI

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an increasing trendno p-value reported

In the whole growth period, the soil NO 3 − -N concentration of root zone showed an increasing trend first and then a downward trend, but the variation rate is inconsistent.

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