提高发酵牛粪有机肥有机氮含量的条件优化

利用外源微生物进行牛粪发酵试验,研究了原料配比、菌种配比、C/N、发酵温度、发酵时间等条件对牛粪发酵过程中有机氮含量的影响,以期为大量堆肥生产试验及研究提供参考。结果表明,当黑曲霉3324∶绿色木霉JD-1∶产朊假丝酵母C-1︰假丝酵母F-2的体积比为1∶3∶3∶3,牛粪与玉米秸秆质量比为3∶1,C/N为22,培养温度为30℃,发酵时间为4 d时,有机氮含量最高,为2.38%。

Optimization of Conditions of Improving Organic Nitrogen Content of Fermented Cow Manure

The experiment of cow manure fermentation by inoculating exogenous microbes were per-formed, and the effects of the raw material ratio, strains ratio, C to N ratio, culture temperature and fer-mentation time on the organic nitrogen content in cow manure were studied, so as to provide a reference for a large number of compost production experiments and research. The results showed that when the ra-tio of Aspergillus niger 3324 to Trichoderma viride JD-1 to Candida utilis C-1 to Candida Albicans F-2 was 1∶3∶3∶3 , the ratio of cow manure to corn stalks was 3∶1 , the ratio of C to N was 2∶1 , culture tempera-ture was 30 ℃, fermentation time was 4 d, the organic nitrogen content was the highest with 2. 38%.