[Effects of returning maize straw into field on dynamic change of soil microbial biomass C, N and P under different promoted decay condition].
A 2-year field experiment of wheat-maize rotation was conducted on a cinnamon soil of east Hebei Province to study the effects of returning maize straw into field on the dynamics of soil microbial biomass C, N and P, and their relationships with soil nutrients and enzyme activities. The results showed that under the condition of returning maize straw combined with applying chemical fertilizer to adjust straw C/N, the application of effective microorganisms could increase soil microbial biomass C, N and P in each crop growth period, advance their peak time, and better regulate soil nutrient supply, compared with no application of effective microorganisms. Soil microbial biomass had a significantly positive correlation with soil enzyme activities, but its correlation with soil hydrolysable N and available P was strongly affected by crop growth and fertilization system.
Zhang
Dianxue
D
Department of Agronomy, Hebei Normal University of Science and Technology, Changli 066600, China. zdxzjj@163.com
Han
Zhiqing
Z
Li
Dongpo
D
Liu
Wei
W
Gao
Shuguo
S
Hou
Dongjun
D
Chang
Liansheng
L
D002244:Carbon / Q000378:metabolism*; D015169:Colony Count, Microbial; D009584:Nitrogen / Q000378:metabolism*; D018547:Plant Stems; D012037:Refuse Disposal / Q000379:methods; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology; D003313:Zea mays / Q000254:growth & development
D012987:Soil; D002244:Carbon; D009584:Nitrogen