According to soil profile of nitrate nitrogen,ammonium nitrogen,organic matter and total nitrogen under different land uses patterns,effects of soil nitrogen leaching under different land uses in the loess hilly and gully region were discussed in detail,and proposals were gaven for local agricultural development.The results showed that soil nitrate nitrogen maximum appeared on 200 cm.The maximum is that solar greenhouse s content is 20.36 mg/kg.Soil ammonium nitrogen content is 10~25 mg/kg.Effect of soil am...
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