苦豆子茎秆粉基质发酵中碳素及氮素的变化

Changes of Carbon and Nitrogen Activity of Sophora alopecuroides Stalks Substrate for Fermentation

设净苦豆子茎秆粉(T1)、苦豆子茎粉+粗纤维降解菌(T2)、苦豆子茎秆粉+有机肥+粗纤维降解菌(T3)、苦豆子茎秆粉+尿素+粗纤维降解菌(T4)、苦豆子茎秆粉+有机肥+尿素+粗纤维降解菌(T5)5个处理,以T1处理为对照,研究苦豆子茎秆粉基质化发酵中碳素及氮素相关参数的变化。结果表明:T3和T5处理堆体升温速度显著快于T1,且保持较长时间的高温(>50℃,均达10d,>55℃,均达6d),缩短苦豆子茎秆堆体腐熟的时间至发酵结束时,较T1处理T5总有机碳和C/N分别降低12.20%、27.76%,T3处理和T5处理全氮质量分数分别增加19.24%和21.49%,NO_3^--N分别增加12.72%和13.60%,NH_4^+-N分别降低16.67%和21.26%,均显著高于T1及其他处理,且两处理间无显著差异,提高堆肥腐熟进程中的总氮质量分数,保证腐熟后的肥力。综合考虑,添加有机肥+尿素+接种微生物菌和添加有机肥+接种微生物堆体对苦豆子茎秆基质化促进效果较优。

The experimental setup included net Sophoraalopecuroidesstem powder（T1）,Sophora alopecuroides stem powder＋stem crude fiber degrading bacteria（T2）,Sophora alopecuroides stempowder＋organic fertilizer and crude fiber degrading bacteria（T3）,Sophora alopecuroides stem powder＋urea＋cellulose fiber degrading bacteria（T4）,Sophora alopecuroides stem powder＋organic fertilizer urea＋crude fiber degrading bacteria（T5）.Taking T1 as control to study the change of related parameters of Sophora alopecuroides stalks substrate for fermentation.The results showed that growth rate of composting temperature of T3 and T5treatment significantly were faster than that of the control,and could keep high temperature for a long time（ 50 ℃for 10 d, 55 ℃for 6d）,and shorten the rotten time of the stalks of Sophora alopecuroides pile body at end of the fermentation,to contrast,total organic carbon mass fraction and C/N was reduced by 12.20% and 27.76%respectively,total nitrogen mass fraction increased by 19.24% and 21.49% respectively,and NO3%--N increased by 12.72% and 13.60% respectively,NH4^＋-N was reduced by 16.67% and 21.26%,respectively,it were significantly higher than that of control and other processing,and there was no significant difference between the two processing,and increased the content of total nitrogen in the process of the composting for ensuring the fertility after it was rotten.To sum up,adding organic fertilizer＋urea＋inoculated microbe and organic fertilizer＋inoculated microbe treatment pile body had better effect on promoting stalks substrate of Sophora alopecuroides.