水分和养分添加对羊草功能性状和地上生物量的影响
赵丹丹1,2,马红媛1,*(
),李阳1,2,魏继平1,王志春1
),李阳1,2,魏继平1,王志春1
Effects of water and nutrient additions on functional traits and aboveground biomass of Leymus chinensis
ZHAO Dan-Dan1,2,MA Hong-Yuan1,*(),LI Yang1,2,WEI Ji-Ping1,WANG Zhi-Chun1
),LI Yang1,2,WEI Ji-Ping1,WANG Zhi-Chun1
图4. 水肥添加对羊草叶片生理性状的影响(平均值±标准误差)。CK, 对照; NA, 氮添加; PA, 磷添加; N+P, 氮、磷共同添加; LW、MW、HW分别表示低、中、高降水量水平。不同小写字母表示在相同施肥水平下, 不同水分添加处理间差异显著(p < 0.05); ns表示水分处理间差异不显著(p > 0.05)。
Fig. 4. Effects of fertilization and water on photosynthetic traits of Leymus chinensis (mean ± SE). Pn, net photosynthesis rate; WUE, water use efficiency. CK, control; NA, N addition; PA, P addition; N+P, N and P additions; LW, MW, HW represent low, moderate and high precipitation levels. Different lowercase letters indicate significant difference (p < 0.05) among different water treatments at the same fertilizer addition, and ns indicates non-significant differences (p > 0.05) among water treatments.
