不同植被恢复下土壤团聚体总磷含量变化特征  

Changes in Total Phosphorus Content of Soil Aggregates Under Different Vegetation Restoration Conditions

作　　者：王永丽 李松[2] 余居华 王乐豪 Wang Yongli;Li Song;Yu Juhua;Wang Lehao(College of Advanced Manufacturing,Fuzhou University,Jinjiang 362251,Fujian,China;Institute of Soil and Fertilizer,Fujian Academy of Agricultural Sciences,Fuzhou 350013,Fujian,China)

机构地区：[1]福州大学先进制造学院,福建晋江362251 [2]福建省农业科学院土壤肥料研究所,福建福州350013

出　　处：《绿色科技》2023年第24期30-34,共5页Journal of Green Science and Technology

基　　金：福建省属公益科研院所基金项目(编号:ZYTS202218)。

摘　　要：以福建长汀县退化红壤为研究对象,选取5个典型的不同植被恢复样地(裸地样地、百喜草样地、甘薯样地、马尾松和芒萁混合样地、马尾松样地),通过团聚体过筛,得到团聚体粒级为:<0.053、0.053~0.25、0.25~2、>2 mm的土壤样品,分别探讨了土壤不同植被恢复下对0~10、10~20、20~30 cm 3种土壤深度以及团聚体总磷含量的影响。结果表明:百喜草样地、马尾松和芒萁混合样地、马尾松样地在0~10 cm土壤中与裸地样地相比,总磷含量分别增加了20.7%、1.9%、6.8%,而在10~20 cm土壤深度总磷含量分别减少了1.3%、46.7%、49.5%,在20~30 cm土壤深度总磷含量分别减少了12.6%、20.6%、38.6%。甘薯样地、马尾松和芒萁混合样地、裸地样地在土壤深度为0~10 cm土壤团聚体<0.053 mm中的总磷含量最大,分别为:0.741、0.1、0.11 mg/g;相反,上述样地在土壤深度为0~10、10~20 cm中的>2 mm粒径团聚体中总磷含量最小。Taking the degraded red soil in Changting County,Fujian Province as the research object,five typical different vegetation restoration plots(bare plots,Paspalum notatum Flugge plots,Dioscorea esculenta(Lour.) Burkill plots,mixed plots of Pinus massoniana Lamb.and Dicranopteris dichotoma(Thunb.) Berhn.,and Pinus massoniana Lamb.plots) were selected as the research object,and the aggregate grain size was obtained through the aggregate sieve< 0.053 mm,0.053~0.25,0.25~2,and >2 mm soil samples;the effects of different vegetation restoration on the total phosphorus content of soil and aggregates at three depths of 0~10 cm,10~20 cm,and 20~30 cm were discussed,respectively.The results showed that the total phosphorus content of Paspalum notatum Flugge,the mixed plots of Pinus massoniana Lamb.and Dicranopteris dichotoma(Thunb.) Berhn.and Pinus massoniana Lamb.plots in 0~10 cm soil increased by 20.7%,1.9% and 6.8% compared with the bare sample plots,while the total phosphorus content decreased by 1.3%,46.7% and 49.5% at 10~20 cm soil depth,respectively,and decreased by 12.6%,20.6% and 38.6% at 20~30 cm soil depth,respectively.The total phosphorus content in the soil aggregates <0.053 mm at 0-10 cm soil depth,0.1 mg/g and 0.11 mg/g,respectively,was the highest in the Dioscorea esculenta(Lour.) Burkill plot,the mixed plot of Pinus massoniana Lamb.and Dicranopteris dichotoma(Thunb.) Berhn.and bare land,respectively,and the total phosphorus content in the >2 mm particle size aggregate at soil depths of 0~10 cm and 10~20 cm was the smallest.

关 键 词：植被恢复 团聚体 磷含量 土壤 

分 类 号：S153[农业科学—土壤学]