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- W2014222893 abstract "A field experiment was established on a representative sandy soil field to evaluate the effect of nitrogen(N) fertilizer and irrigation application rates on nitrate (NO3--N) present in the soil profile during two consecutive years (2006- 2007). The results revealed that crop yields were not significantly enhanced at N application rate over than 225 kg/ha and were not significantly reduced when 75% of traditional irrigation rates (12000 m3/ha) were supplied. The amounts of NO3--N accumulation in soil ranged from 9.81 to 87.83 kg/ha significantly increased with N application rates. Compared with reduced irrigation rates, NO3--N accumulations were obviously decreased in the 0-100 cm soil layer but increased in the 200-300 cm soil layer on traditional irrigation rate. The results of this study indicate that excess N fertilizer and irrigation application rates have been provide for crop, and cause more NO3--N leaching. However, there was a great potential for reducing N fertilizer and irrigation water inputs to mitigate nitrate accumulation and leaching in the profiles of this sandy farmland region." @default.
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- W2014222893 date "2011-01-01" @default.
- W2014222893 modified "2023-10-16" @default.
- W2014222893 title "Effects of nitrogen fertilizer and irrigation rate on nitrate present in the profile of a sandy farmland in Northwest China" @default.
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- W2014222893 doi "https://doi.org/10.1016/j.proenv.2011.12.113" @default.
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