Figure 2: Distribution of NO3− concentrations in Yingtan (YT) and Qianjiang (QJ) paddy soils. | Scientific Reports

Figure 2: Distribution of NO3− concentrations in Yingtan (YT) and Qianjiang (QJ) paddy soils.

From: Microprofiling of nitrogen patches in paddy soil: Analysis of spatiotemporal nutrient heterogeneity at the microscale

Figure 2

The concentric circles in the upper row represent YT paddy soil, and the concentric circles in the row below represent QJ paddy soil. The concentrations measured at different distance from the fertilisation site (the circles in the concentric circles, from inside to out, represent 0, 2, 4, 6, 8, 10, 20, 30 and 40 mm distance from the fertilisation zone, respectively) at different sampling dates (the concentric circles left-to-right represent 1, 3, 5, 7, 10, 15 20, 40 and 70 days after fertilisation, respectively). Mean values are shown for a sample size of three replicates.

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