当前位置: 首页 > 文章 > 黄土高原沟壑区不同年限苹果园土壤碳、氮、磷变化特征 植物营养与肥料学报 2008,14 (4) 685-691
Position: Home > Articles > Changes of orchard soil carbon,nitrogen and phosphorus in gully region of Loess Plateau Journal of Plant Nutrition and Fertilizers 2008,14 (4) 685-691

黄土高原沟壑区不同年限苹果园土壤碳、氮、磷变化特征

作  者:
杨雨林;郭胜利;马玉红;车升国;孙文艺
单  位:
中国科学院水利部水土保持研究所;西北农林科技大学资源与环境学院
关键词:
黄土高原沟壑区;果园;土壤有机碳;土壤全氮;土壤全磷;土壤有效磷
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、101、5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0.940、.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6.36、.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100 cm土层下随苹果园种植年限增加而增加。
译  名:
Changes of orchard soil carbon,nitrogen and phosphorus in gully region of Loess Plateau
作  者:
YANG Yu-lin1,GUO Sheng-li1,2,MA Yu-hong2,CHE Sheng-guo1,SUN Wen-yi2(1 College of Resource and Environment,Northwest A & F University;2 Institute of Soil and Water Conservation,2 Chinese Academy of Sciences and Ministry of Water Resource,Yangling,Shaanxi 712100, China)
关键词:
gully region of Loess Plateau;orchard;soil organic C;soil total N;soil total P;Olsen-P
摘  要:
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 NO-3-N were investigated in topsoil 020 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 0-80 cm 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 150-300 cm increased significantly with planting year.

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