| Effect of two amendments on nitrogen transformation and its related microbial during cow manure composting |
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| DOI：10.7606/j.issn.1000-7601.2010.01.15 |
| Key Words: cow manure composting nitrogen transformation amendment |
| Author Name | Affiliation | | MA Lihong | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | HUANG Yimei | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | LI Xuezhang | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | QI Jinhua | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | ZHAO Zhenzhen | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | LI Ping | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| The composting experiment was taken to study the effect of fungi and chicken manure on changes of several main nitrogen forms and it's related microbial during cow manures composting in aerated static piles. The results showed that high-temperature period was longer and increasing extent of pH during cow composting adding fungi and chicken manure was less than that in control. The maximum ammonia volatilization of high-temperature period in control, adding fungi and adding chicken manure treatments were 413, 197, and 216 mg/(kg·d). Ammonia nitrogen content was increased in high-temperature period and then decreased. The addition of fungi decreased the maximum ammonia n
itrogen by 18.0% than control, and the addition of chicken manure increased the maximum ammonia nitrogen by 10.5% than control. In thermophilic period, maximum nitrate nitrogen content in adding fungi and adding chicken manure treatments were 1.85 and 1.71 times of control. At the end of composting, organic nitrogen content decreased by 19.1% and total nitrogen decreased by 21.6% than initial stage in control treatment, while organic nitrogen content increased by 4.5% and 2.2%, and total nitrogen increased by 1.7% and 5.5% than initial stage in adding fungi and adding chicken manure treatments. The addition of fungi and chicken manure were beneficial to accumulation of amino sugar nitrogen and amino acid nitrogen, and formation and retention of organic nitrogen. In the whole process, ammonifier was the most. Ammonifier and nitrifier in adding fungi and adding chicken manure treatments was more than in control treatment. In thermophilic phase, denitrifier in adding fungi treatment was more than control, and nitrogen-fixing bacteria in adding chicken manure treatments was more than control. During cooling stage, nitrogen-fixing bacteria in adding fungi treatment was more than control. |
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