【作者】 周立业； 张玉霞； 杨秀梅； 田迅； 姜健；

【Author】 ZHOU Li-ye;ZHANG Yu-xia;YANG Xiu-mei;TIAN Xun;JIANG Jian;College of Agriculture,Inner Mongolia University of Agriculture for Nationalities;School of Life science,Inner Mongolia University of Agriculture for Nationalities;College of Resources and Environment,Dalian Nationalities University;

【机构】 内蒙古民族大学农学院； 内蒙古民族大学生命科学学院； 大连民族学院环境与资源学院；

【摘要】 为了了解少花蒺藜草(Cenchrus pauciflorus Benth.)入侵对土壤理化性质的影响,对科尔沁沙地2个典型人工固沙林小叶杨(populus simonii)、黄柳(Salix gordejevii)群落中优势种少花蒺藜草生境地土壤养分进行测定分析。结果表明:少花蒺藜草2生境地中土壤pH值在7.35~7.80之间,土壤有机质含量在0.48%~0.59%之间,碱解氮含量在21.4~59.07mg/kg之间,有效磷含量范围为11.28~22.17mg/kg,速效钾含量在78.24~173.20mg/kg之间。土壤有机质及速效养分含量随着少花蒺藜草生育期的变化均有不同程度的下降,降低幅度随生育期的变化有所增大,土壤沙化现象加重。更多还原

【Abstract】 To study the effects of field sandbur(Cenchrus pauciflorus Benth.) invasion on soil properties,in the paper,field sandbur soil nutrients were determined in the two different artificially sand-fixation forests of Xiao Ye Yang(Populus simonii) and HuangLiu(Salix gordejevii) habitats in Horqin.The results showed that:the two habitats’ soil pH were 7.35 ~ 7.80,soil organic matter contents were0.48%~ 0.59%,alkali solution N content were 21.4 ~ 59.07mg/kg;Effective phosphorus cotents werell.28 ~ 22.17mg/kg,rapidly-available potassium contents were 78.24 ~ 173.20mg/kg.In the whole growth process,soil nutrients had reduced in different rate.With Field sandbur growth,the soil desertification was increased.更多还原