Changes of Nitrate-N Accumulated in soil profile after changing grain crop land into vegetables land
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Graphical Abstract
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Abstract
Soil nitrate-N was rapidly leached below 2 meters after changing grain crop land into vegetable land. Because of difference in fertilization, irrigation, plant uptake and so on, about 41%~50% of soil nitrate-N accumulated in a depth of 2~4m layer in vegetable land, and 95% of that was found in 0~2m layer in grain crop land.
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