Research Article
Effect of Saturated Near Surface on Nitrate and Ammonia Nitrogen Losses in Surface Runoff at the Loess Soil Hillslope
Table 2
Means of nutrient concentration with runoff under different near-surface soil moisture conditions.
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†C, control fertilizer treatment (no fertilizer input); L, low fertilizer treatment/input (120 kg N ha−1); H, high fertilizer treatment/input (240 kg N ha−1). FD, free drainage hydraulic gradient; SA, saturated hydraulic gradient. ‡Mean values with a fertilizer treatment followed by any identical letters are not statistically different at the 95% confidence level according to LSD tests. |