施氮与刈割留茬高度对草场生产力及植物群落组成的影响

王开丽,杨合龙,肖红,孙伟,戎郁萍

Effects of Nitrogen Application and Clipping Height on Vegetation Productivity and Plant Community Composition of Haying Meadow Steppe

WANG KaiLi,YANG HeLong,XIAO Hong,SUN Wei,RONG YuPing

表2 主要植物重要值的三因素方差分析

Table 2 Results (P-value) of three-way repeated-measures ANOVAs on the important value (IV) of crucial species

变异来源 Source of variation 无芒雀麦 B. inermis 羊草 L. chinensis 二裂委陵菜 P. bifurca 苔草 C. duriuscula 糙隐子草 C. squarrosa 星毛委陵菜 P. acaulis 刈割Mowing NS NS <0.001 NS 0.003 0.020 施氮Nitrogen application 0.012 <0.001 0.043 NS 0.016 NS 年份Year NS NS 0.035 NS 0.040 NS 刈割×施氮M×N NS 0.008 NS NS NS NS 刈割×年份M×Y NS NS NS NS NS NS 施氮×年份N×Y NS NS NS NS NS NS 刈割×施氮×年份M×N×Y NS NS NS NS NS NS