• ISSN 1008-505X
  • CN 11-3996/S
杨雨林, 郭胜利, 马玉红, 车升国, 孙文艺. 黄土高原沟壑区不同年限苹果园土壤碳氮磷变化特征[J]. 植物营养与肥料学报, 2008, 14(4): 685-691. DOI: 10.11674/zwyf.2008.0411
引用本文: 杨雨林, 郭胜利, 马玉红, 车升国, 孙文艺. 黄土高原沟壑区不同年限苹果园土壤碳氮磷变化特征[J]. 植物营养与肥料学报, 2008, 14(4): 685-691. DOI: 10.11674/zwyf.2008.0411
YANG Yu-lin, GUO Sheng-li, MA Yu-hong, CHE Sheng-guo, SUN Wen-yi. Changes of orchard soil carbon, nitrogen and phosphorus in gully region of Loess Plateau[J]. Journal of Plant Nutrition and Fertilizers, 2008, 14(4): 685-691. DOI: 10.11674/zwyf.2008.0411
Citation: YANG Yu-lin, GUO Sheng-li, MA Yu-hong, CHE Sheng-guo, SUN Wen-yi. Changes of orchard soil carbon, nitrogen and phosphorus in gully region of Loess Plateau[J]. Journal of Plant Nutrition and Fertilizers, 2008, 14(4): 685-691. DOI: 10.11674/zwyf.2008.0411

黄土高原沟壑区不同年限苹果园土壤碳氮磷变化特征

Changes of orchard soil carbon, nitrogen and phosphorus in gully region of Loess Plateau

  • 摘要: 管理措施是影响土壤质量演变的重要因素.分析和讨论了5、10、15年苹果园耕层(0―20 cm)和0―200 cm土壤有机碳、全氮、全磷、有效磷和硝态氮含量及其影响因素。结果表明,5年、10年和15年的塬面苹果园表层土壤有机碳依次为7.5、6.7和6.7 g/kg;全氮依次为0.94、0.85和0.83 g/kg;但土壤全磷和速效磷含量随着种植年限而增加,与5年苹果园相比,塬面10年苹果园土壤全磷、速效磷含量分别提高了11%、60%,并且磷素的变异性随年限而增加。坡地10年、15年和20年苹果园土壤有机碳依次为6.3、6.2 和6.5 g/kg,全氮依次为0.76、0.76 和0.81 g/kg;与10年苹果园相比,15年苹果园土壤全磷、速效磷含量分别提高了20%、28%。土壤剖面0―80 cm内不同土地利用方式土壤碳、氮、磷含量随土层加深而降低,80 cm以下不同利用条件苹果园土壤碳、磷含量差异不大,氮素含量在土壤100 cm下随苹果园种植年限增加而增加。

     

    Abstract: Management practice is an important factor for soil quality changes. Changes in SOC (soil organic C),TSN (total soil nitrogen),Total P, Olsen P and NO3--N were investigated in topsoil 0-20 cm and 0-200 cm of 5-year, 10-year, and 15-year orchard of Wangdonggou watershed in Gully Region of Loess Plateau. SOC and TSN content of topsoil in orchard changed little with planting year; however, total P and Olsen P contents significantly increased. For the orchard in the tableland, SOC is 7.5, 6.7, and 6.7 g/kg in 5-year, 10-year, and 15-year orchard, respectively, TSN is 0.94, 0.85, and 0.83 g/kg, respectively. For 15-year orchard in the tableland, total P and Olsen P increased by 11% and 60%, respectively, compared with 5-year orchard. For the orchard in the slopeland, SOC is 6.3, 6.2, and 6.5 g/kg in 10-year, 15-year, and 20-year orchard, respectively, TSN is 0.76, 0.76, and 0.81 g/kg, respectively. For 15-year orchard in the tableland, total P and Olsen P increased by 20% and 28%, respectively, compared with 10-year orchard. SOC, TSN, total P, and Olsen P in the 0-80cm soil profile decreased with depth, but SOC or total P or Olsen P content below 80cm were not significantly different. In addition, nitrate accumulation in 0-100 and 150-300cm increased significantly with planting year.

     

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