紫云英季土壤固氮微生物对外源碳氮投入的响应

杨璐,曾闹华,白金顺,周兴,周国朋,高嵩涓,聂军,曹卫东

Responses of Soil Diazotroph Community to Rice Straw, Glucose and Nitrogen Addition During Chinese Milk Vetch Growth

Lu YANG,NaoHua ZENG,JinShun BAI,Xing ZHOU,GuoPeng ZHOU,SongJuan GAO,Jun NIE,WeiDong CAO

表2 外源C、N添加对紫云英快速生长期土壤理化性状的影响

Table 2 Effects of exogenous C and N addition on soil physicochemical properties at fast growing stage of Chinese milk vetch

处理 Treatment pH 有机质 SOM (g·kg-1) 全氮 TN (g·kg-1) C/N NO3--N (mg·kg-1) NH4+-N (mg·kg-1) 速效磷 AP (mg·kg-1) 速效钾 AK (mg·kg-1) CK 7.93±0.02ab 34.04±0.17b 2.13±0.02bc 11.05±0.11abc 4.56±0.69b 1.02±0.16b 20.90±0.39a 118.52±3.91a Rs 7.99±0.04a 34.54±0.30ab 2.11±0.03c 11.29±0.13ab 4.42±0.73b 1.14±0.09ab 20.98±0.31a 118.87±4.80a RsN1 7.97±0.02a 34.78±0.24ab 2.11±0.03c 11.34±0.16a 4.70±0.53b 1.42±0.13a 21.88±0.98a 109.91±3.39ab RsN2 7.94±0.02ab 35.07±0.34a 2.23±0.03a 10.80±0.20cd 7.29±0.96a 1.34±0.12ab 20.30±0.86a 102.85±4.51b Glc 7.89±0.03b 34.95±0.21a 2.20±0.02abc 10.94±0.09bcd 6.15±0.62ab 1.27±0.05ab 17.43±0.36b 118.36±2.53a GlcN1 7.97±0.02a 35.02±0.15a 2.21±0.04ab 10.89±0.18cd 8.16±0.85a 1.20±0.02ab 17.33±0.67b 114.86±2.25a GlcN2 7.93±0.02ab 34.87±0.43ab 2.26±0.04a 10.64±0.15d 7.06±0.43a 1.28±0.20ab 15.93±0.23b 110.19±3.77ab