芨芨草叶片养分特征对氮磷不同添加水平的响应

李军军, 李萌茹, 齐兴娥, 王立龙, 徐世健

Response of nutrient characteristics of Achnatherum splendens leaves to different levels of nitrogen and phosphorus addition

LI Jun-Jun, LI Meng-Ru, QI Xing-E, WANG Li-Long, XU Shi-Jian

表4 养分添加水平和土壤N:P对叶片N、P养分特征影响的双因素方差分析

Table 4 Results of two-way ANOVAs on the effects of nutrient addition, N:P, and their interactions on leaf N and P contents, N:P and N, P resorption efficiency

叶片性状 Leaf trait 叶片类型 Leaf type 养分添加水平 Nutrient addition level 氮磷比 N:P 交互作用 Interaction F p Sig. (N) F p Sig. (R) F p 氮含量 N content 成熟叶片 GL 1.260 0.310 a, a, a 7.940 0.003 b, a, b 10.220 0.000 衰老叶片 SL 18.820 0.000 a, a, b 1.300 0.300 a, a, a 1.190 0.350 磷含量 P content 成熟叶片 GL 1.900 0.050 a, a, a 1.990 0.580 a, a, a 2.500 0.090 衰老叶片 SL 0.530 0.050 a, a, ab 3.000 0.110 ab, a, a 0.530 0.005 氮磷比 N:P 成熟叶片 GL 0.090 0.620 ab, ab, a 9.000 0.002 b, a, b 1.630 0.050 衰老叶片 SL 6.110 0.004 a, b, b 4.560 0.040 a, a, b 1.830 0.150 氮回收效率 N resorption efficiency (NRE) 33.880 0.000 b, b, a 5.670 0.012 a, ab, b 9.500 0.000 磷回收效率 P resorption efficiency (PRE) 0.630 0.540 a, a, a 6.440 0.008 a, b, b 0.660 0.630 NRE:PRE 3.630 0.050 b, ab, a 13.730 0.000 b, a, a 1.850 0.160