中国草地学报2025，Vol.47Issue(6)：10-20,11.DOI:10.16742/j.zgcdxb.20240261
刈割与施肥对草甸草原羊草和土壤微量元素含量的影响
Effects of Mowing and Fertilization on the Trace Element Contents of Leymus chinensis and Soil in a Meadow Steppe
摘要
Abstract
In order to investigate the effects of different mowing stubble heights and fertilization on the dominant species and soil trace element contents in meadow grassland,this research focused on Hulunbeier meadow steppe.Trace element contents of the dominant species Leymus chinensis and the surface soil(0～10 cm)were determined under the following treatment combinations:six mowing stubble heights(3,6,9,12,15 cm,and no mowing)and two fertilization levels(no fertilization and fertilization).The results showed that mowing significantly increased(P<0.05)the total soil manganese(Mn)content.Fertilization signifi-cantly reduced(P<0.05)iron(Fe),copper(Cu),zinc(Zn),molybdenum(Mo)contents of L.chinensis,whereas total Mn and Zn contents,available Zn and Mo contents,and effective coefficients of Mn,Zn,and Mo in soil were increased(P<0.05).The interaction of mowing and fertilization did not affect the contents of Fe,Mn,Cu,Zn,Mo and boron(B)significantly.The highest total soil Mn content of 435.4 mg/kg was observed with the 12 cm stubble height under no fertilization treatment.When fertilization was applied,the highest Fe(191.6 mg/kg),Mn(35.5 mg/kg),Zn(10.8 mg/kg),and B(4228.3 mg/kg)contents in L.chinensis were recorded,at the 6 cm stubble height,while available contents of Fe(126.7 mg/kg),Mn(94.5 mg/kg),Cu(1.4 mg/kg)and Mo(1.3 mg/kg)in soil reached maximum values with the 12 cm stubble height.Fertilizer application with 12 cm stubble height increased the effective coefficients of soil Mn,Zn,Mo and B by 0.1,0.2,0.4 and 1.9×10-4,respectively.Compared with the treatment without fertiliza-tion,fertilization at a stubble height of 12 cm increased the contents of Fe,Mn,Cu and B of L.chinensis.This research can provide a practical reference for the establishing sustainable mowing system in meadow steppe.关键词
刈割/留茬高度/施肥/微量元素/草甸草原Key words
Mowing/Stubble height/Fertilization/Trace elements/Meadow steppe分类
农业科技引用本文复制引用
申悦,那木汗,张凤杰,王晓光,宋彦涛,韩博,乌云娜..刈割与施肥对草甸草原羊草和土壤微量元素含量的影响[J].中国草地学报,2025,47(6):10-20,11.基金项目
国家自然科学基金项目(32471643,31670455) （32471643,31670455）
中央高校基本科研业务费项目(04442024091) （04442024091）
