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3 无芒雀麦和羊草功能性状三因素方差分析

Table 3 Results (P-value) of three-way repeated-measures ANOVAs on the plant functional traits of B. inermis and L. chinensis.

变异来源 Source of variation 无芒雀麦 B. inermis 羊草 L. chinensis 株高 Plant height 叶面积 Leaf area 地上部氮素含量 Aboveground nitrogen content 株高 Plant height 叶面积 Leaf area 地上部氮素含量 Aboveground nitrogen content 刈割Mowing 0.012 NS NS NS NS 0.012 施氮Nitrogen application <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 年份Year <0.001 — NS <0.001 — NS 刈割×施氮M×N NS NS NS NS NS NS 刈割×年份M×Y NS — NS NS — NS 施氮×年份N×Y <0.001 — NS <0.001 — NS 刈割×施氮×年份M×N×Y NS — NS NS — NS