在连续3年玉米秸秆还田的基础上，通过田间小区试验，研究了秸秆还田以及配施低温菌剂对
玉米农田生态系统黑土碳、氮的影响。结果表明，除纤维素分解菌处理全氮含量低于对照外，其他处
理土壤全氮含量较对照提高了7.4 %~14.81 %。施菌剂处理土壤有机质含量高于对照0.93 % ~ 5.61 %。
除复合菌剂外，其他处理均提高了土壤铵态氮含量。不同处理土壤硝态氮含量总体表现为低温复合菌
剂处理＞纤维素分解菌处理＞低温生物表面活性剂处理＞低温纤维素分解菌处理＞生物表面活性剂处
理＞常温复合菌处理＞对照处理。低温复合菌处理、生物表面活性剂处理、低温纤维素分解菌处理、
低温表面活性剂处理、复合菌剂和纤维素分解菌微生物量碳含量分别高出对照74.32 %、59.35 %、
51.17 %、44.62 %、31.47 %和24.67 %。低温复合菌剂处理、纤维素分解菌处理、低温纤维素分解菌处
理、低温生物表面活性剂、生物表面活性剂和复合菌处理微生物量氮含量分别是对照1.42倍、1.36倍、
1.32倍和1.21倍、1.11倍和1.05倍。低温复合菌处理能显著提高土壤碳、氮含量，明显高于其他处理。
单一低温菌剂处理能较常温菌剂处理能显著提高土壤全氮含量，在提高土壤硝态氮含量、微生物量氮
含量、铵态氮含量方面略低于纤维素分解菌处理外，但高于其他常温处理。
英文摘要:
A field plot experiment was carried out to study the effects of low-temperature agent adding into
straw and returning to field on carbon and nitrogen in the maize ecosystem by three years of straw returning
to the field. The results showed that except for cellulose decomposing microbes treatment had less total
nitrogen contents than CK, other treatments had more total nitrogen contents than CK from 7.4 % to 14.81 %.
Also organic matter contents of applications of agent treatments were higher than that of CK from 0.93 % to
5.61 %. All treatments except complex agent treatment had more NH4+-N contents than CK. NO3--N
contents of diffferent treatments were low-temperature complex agent＞cellulose decomposing microbes＞
low-temperature biosmfactants＞low-temperature cellulose decomposing microbes＞biosmfactants＞
complex agent＞CK. In addition, the treatments of low-temperature complex agent, biosmfactants,
low-temperature cellulose decomposing microbes, low-temperature biosmfactants, complex agent, and
cellulose decomposing microbes had more microbial biomass carbon contents than CK by 74.32 %, 59.35 %, 51.17 %, 44.62 %, 31.47 %, and 24.67 %, respectively. Microbial biomass nitrogen contents of
low-temperature complex agent, cellulose decomposing microbes, low-temperature cellulose decomposing
microbes, low-temperature biosmfactants, biosmfactants, and complex agent treatments were greater than that
of CK 1.42 times, 1.36 times, 1.32 times, 1.21 times, 1.11 times, and 1.05, respectively. Carbon and nitrogen
contents were improved by low-temperature complex agent treatment remarkably and were much more than
those of other treatments. Total nitrogen contents raised by single agent treatments were much higher than
those of normal temperature agent treatments, while NH4+-N, NO3--N, and microbial biomass nitrogen
contents of single agent treatments were a little lower than those of cellulose decomposing microbes
treatment, but higher than those of other normal temperature agent treatments.
查看全文
;
