• ISSN 1008-505X
  • CN 11-3996/S
吕殿青, 杨学云, 张航, 戴万宏, 张文孝. 陕西(土娄)土中硝态氮运移特点及影响因素[J]. 植物营养与肥料学报, 1996, 2(4): 289-296. DOI: 10.11674/zwyf.1996.0401
引用本文: 吕殿青, 杨学云, 张航, 戴万宏, 张文孝. 陕西(土娄)土中硝态氮运移特点及影响因素[J]. 植物营养与肥料学报, 1996, 2(4): 289-296. DOI: 10.11674/zwyf.1996.0401
Lu Dianqing Yang Xueyun Zhang Hang Dai Wanhong Zhang Wenxiao, . STUDY ON THE CHARACTERISTICS OF MOVEMENT AND LEACHING LOSS OF NO3-N IN LOU SOIL IN SHAANXI AND ITS INFLUENCING FACTORS[J]. Journal of Plant Nutrition and Fertilizers, 1996, 2(4): 289-296. DOI: 10.11674/zwyf.1996.0401
Citation: Lu Dianqing Yang Xueyun Zhang Hang Dai Wanhong Zhang Wenxiao, . STUDY ON THE CHARACTERISTICS OF MOVEMENT AND LEACHING LOSS OF NO3-N IN LOU SOIL IN SHAANXI AND ITS INFLUENCING FACTORS[J]. Journal of Plant Nutrition and Fertilizers, 1996, 2(4): 289-296. DOI: 10.11674/zwyf.1996.0401

陕西(土娄)土中硝态氮运移特点及影响因素

STUDY ON THE CHARACTERISTICS OF MOVEMENT AND LEACHING LOSS OF NO3-N IN LOU SOIL IN SHAANXI AND ITS INFLUENCING FACTORS

  • 摘要: 利用不同深度的渗漏池研究了陕西(土娄)土中NO3-N运移特点及影响因素。结果表明,NO3-N淋失量与土壤深度呈指数曲线关系,与施N量呈线性相关;NO3-N淋移深度随地而接水量(降水量加灌水量)的增加而增大;NO3-N在土壤剖面中的分布大部分都集中在0~60cm,含量高峰一般出现在20~40cm;不同施N方法对NO3-N的淋失和在土壤中的积累都有明显的影响。

     

    Abstract: In Lysimeters the movement and Leaching Loss of NO3-N in Lou Soil (cumulic cinnamon soil) in Shaanxi and its influencing factors were studied. The results obtained from the above study showed as follows: 1.The relationship between the amount of NO3-N Leaching Loss and the depth of soil profile could be simulated by exponential formula as Y=7386.73e-0.02559x 2.The NO3-N could be leached down to the 200cm, 100cm. and 50cm depth of soil profile under the 629mm, 349mm and 174mm of accepted water respectively. 3.The most part of NO3 -N in soil profile was concentrated in 0-50cm of soil layer, the peak of which usually presented in 20~40cm. 4.The NO3-N Leaching Loss from 50 and 80cm depth of lysimeters and the NO3-N accumulation in 100, 120, 150, 200cm depth of lysimeters were N applied with 3 times 2 times 1 time. 5.The NO3-N Leaching out from 100cm depth of lysimeter was increased with the increase of N fertiizer used. 6.The NH4C1 presented the trend to promote the crop growth, increase N uptake and reduce the NO3-N Leaching Loss. 7.N fertilizer mixed with 0~15cm soil layer was higher efficiency than other methods of N applied.

     

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