氮硅添加对青藏高原高寒草甸土壤氮矿化的影响
牟静1,宾振钧2,李秋霞1,卜海燕1,张仁懿1,徐当会1,*(
)
)
Effects of nitrogen and silicon addition on soil nitrogen mineralization in alpine meadows of Qinghai-Xizang Plateau
MOU Jing1,BIN Zhen-Jun2,LI Qiu-Xia1,BU Hai-Yan1,ZHANG Ren-Yi1,XU Dang-Hui1,*()
)
图3. 青藏高原高寒草甸不同施氮浓度下土壤净硝化速率(平均值±标准误差, n = 6)。CK、N20、N40、N60, 分别添加NH4NO3 0、20、40、60 g·m-2; Si4, 添加硅酸4 g·m-2。不同小写字母表示处理间差异显著(p < 0.05)。
Fig. 3. Net nitrification rates under different nitrogen concentrations in alpine meadows of Qinghai-Xizang Plateau (mean ± SE, n = 6). CK, N20, N40, N60, added NH4NO3 0, 20, 40, 60 g·m-2, respectively; Si4, added silicic acid 4 g·m-2. Different lowercase letters indicate significant differences among treatments (p < 0.05).
