氮硅添加对青藏高原高寒草甸土壤氮矿化的影响

牟静,宾振钧,李秋霞,卜海燕,张仁懿,徐当会

Effects of nitrogen and silicon addition on soil nitrogen mineralization in alpine meadows of Qinghai-Xizang Plateau

Jing MOU,Zhen-Jun BIN,Qiu-Xia LI,Hai-Yan BU,Ren-Yi ZHANG,Dang-Hui XU

表1 施肥、土壤深度对青藏高原高寒草甸土壤净矿化速率的双因素方差分析结果

Table 1 Two-factor variance analysis between fertilization and soil depths on soil net mineralization rate in alpine meadows of Qinghai-Xizang Plateau

来源 Source 第三类平方和 Type III sum of squares df 均方 Mean Square F 显著性 Sig. 校正模型 Corrected Model 1 436 023.182a 8 179 502.898 5 325.359 0.000 截距 Intercept 1 238 798.353 1 1 238 798.353 36 751.753 0.000 NSi 906 007.721 2 453 003.860 13 439.383 0.000 SD 318 252.753 2 159 126.376 4 720.844 0.000 NSi × SD 211 762.709 4 52 940.677 1 570.605 0.000 误差 Error 606.729 18 33.707 总计 Total 2 675 428.265 27 校正后总数 Corrected total 1 436 629.912 26