Which agricultural outcome occurred within pre-Columbian chinampa systems when maize stalk residue was incorporated into the soil?

💡 Explanation

When maize stalk residue decomposes in chinampa soil, mineralization releases nutrients as bacteria fix them and provide nitrogen, enhancing soil fertility. Therefore enhanced nitrogen fixation results, rather than salinity reduction, erosion increase, or fertility decrease, which require very different soil or agricultural mechanisms.

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