[1]ZHAO Bin,WANG Hong,ZHANG Rui-fang,et al.Simulation Study on Nitrate Transport and Leaching in the Gneiss Entisols[J].Research of Soil and Water Conservation,2014,21(01):122-126.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 01
Page number:
122-126
Column:
Public date:
2014-02-28
- Title:
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Simulation Study on Nitrate Transport and Leaching in the Gneiss Entisols
- Author(s):
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ZHAO Bin1, WANG Hong2, ZHANG Rui-fang2, ZHOU Da-mai2, ZHANG Ai-jun2
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1. College of Science, Agricultural University of Hebei, Baoding, Hebei 071001, China;
2. Research Institute of Mountainous Areas, Agricultural Engineering Technology Research Center of Mountain District in the North of China, Agricultural University of Hebei, Baoding, Hebei 071001, China
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- Keywords:
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gneiss; nitrate; transport and leaching
- CLC:
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S153.6+1
- DOI:
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- Abstract:
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By simulating soil column in laboratory, the effects of the nitrate vertical transport characteristics in the gneiss of Taihang mountainous region of Hebei Province under different N fertilizer were studied. The results showed that the ratio of leaching loss amounts of nitrate-nitrogen was 1∶0.87∶0.94 among urea, organic-inorganic mixed fertilizer and N-P compound fertilizer. The amount of nitrate leaching increased with the increasing amount of nitrogen fertilizer, but there was no significant difference among the three fertilizers. Organic-inorganic mixed fertilizer could reduce nitrate leaching with the medium nitrogen fertilizer application. For urea, the rate of nitrate leaching loss averaged 29%, 27.8% for N-P compound fertilizer, 23.7% for organic-inorganic mixed fertilizer. With the increase of soil depth, there was no significant difference between 60 cm and 90 cm in which the ratio of nitrate-nitrogen leaching loss was 1∶1.03. At the end of the leaching, the nitrate content of organic-inorganic mixed fertilizer was the highest and the urea nitrate content was the lowest in different treatments.