沙蓬( Agriophyllum squarrosum )根际固氮菌群落结构特征
张胜男, 杨杉杉, 高海燕, 张雷, 闫德仁, 魏一凡

Dynamic characteristics of diazotrophs community in the rhizosphere of Agriophyllum squarrosum
Shengnan Zhang, Shanshan Yang, Haiyan Gao, Lei Zhang, Deren Yan, Yifan Wei
表2 沙蓬根际土壤养分特征
Table 2 Characteristics of nutrients in the rhizosphere soil of Agriophyllum squarrosum
土壤养分发育阶段
幼苗期M营养生长期Y生殖生长期S立枯期L
有机质/(g·kg-11.86±0.13ab2.09±0.18a1.62±0.14b1.68±0.04b
速效氮/(mg·kg-111.33±0.98b13.17±0.39a7.21±0.54d10.11±0.04c
速效磷/(mg·kg-135.77±2.21c48.48±2.79b33.33±0.47c65.65±5.16a
速效钾/(mg·kg-1162.36±5.60b155.55±0.14b85.28±8.20c238.13±3.95a
蔗糖酶/(mg·d-1·g-11.52±0.06a1.01±0.07b0.81±0.09c1.08±0.07b
脲酶/(μg·d-1·g-1156.54±1.17a161.95±7.02a105.84±2.34c139.30±2.55b
中性蛋白酶/(μg·d-1·g-116.75±4.72b38.33±2.92a17.80±0.90b2.97±0.45c
中性磷酸酶/(mg·d-1·g-1223.54±18.23ab236.01±28.78a172.69±1.92c187.08±0.96bc
过氧化氢酶/(mg·d-1·g-128.90±1.30a29.80±0.44a26.59±0.21b30.56±1.31a