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| Effect of carbonaceous amendment on nitrogen loss during the aerobic composting of sheep manure |
| Received:May 21, 2018 |
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| KeyWord:composting;carbonaceous amendment;sheep manure;nitrogen loss |
| Author Name | Affiliation | E-mail | | WANG Hai-hou | Taihu Research institute of Agricultural Sciences, Key Scientific Observation & Experiment Station Paddy Field for Eco-environment, Suzhou, Ministry of Agriculture, Suzhou 215155, China | | | HE Xu | Jiangsu Anfeng Biological Pesticides Engineering Center Company LTD, Taicang 215400, China | | | TAO Yue-yue | Taihu Research institute of Agricultural Sciences, Key Scientific Observation & Experiment Station Paddy Field for Eco-environment, Suzhou, Ministry of Agriculture, Suzhou 215155, China | | | JIN Mei-juan | Taihu Research institute of Agricultural Sciences, Key Scientific Observation & Experiment Station Paddy Field for Eco-environment, Suzhou, Ministry of Agriculture, Suzhou 215155, China | | | LU Chang-ying | Taihu Research institute of Agricultural Sciences, Key Scientific Observation & Experiment Station Paddy Field for Eco-environment, Suzhou, Ministry of Agriculture, Suzhou 215155, China | | | SHI Lin-lin | Taihu Research institute of Agricultural Sciences, Key Scientific Observation & Experiment Station Paddy Field for Eco-environment, Suzhou, Ministry of Agriculture, Suzhou 215155, China | | | ZHOU Xin-wei | Taihu Research institute of Agricultural Sciences, Key Scientific Observation & Experiment Station Paddy Field for Eco-environment, Suzhou, Ministry of Agriculture, Suzhou 215155, China | | | SHEN Ming-xing | Taihu Research institute of Agricultural Sciences, Key Scientific Observation & Experiment Station Paddy Field for Eco-environment, Suzhou, Ministry of Agriculture, Suzhou 215155, China | smxwwj@163.com |
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| Abstract: |
| The composting of livestock residue (sheep manure) plays an important role in grass-sheep-field of modern agriculture and animal husbandry recycling production. In order to develop an effective material for controlling nitrogen loss in the aerobic composting process of sheep manure, a carbonaceous amendment mixed with sheep manure and rice straw was adopted in a 34-day composting experiment. And to aim to determine the effect of carbonaceous amendment on nitrogen loss in the aerobic composting process of sheep manure, the temperature, NH3 volatilization rate, N2O emissions flux, and nitrogen content of the composting body were monitored. In the current study, two treatments, i.e., (i) aerobic thermophilic composting of mixing sheep manure and rice straw (CK), (ii) on the basis of CK, adding 15% (m/m) carbonaceous amendment (CA) were conducted. Compared with the CK, the carbonaceous amendment rapidly increased the composting temperature from 1st to 7th day, while did not significantly increased composting temperature from 8st to 34th day. After 34 days of composting, the total amount of NH3 volatilization was 368.38 mg·kg-1 in the CK and 175.63 mg·kg-1 in the CA. The total cumulative N2O emission flux was 50.38 mg·kg-1 in the CK and 88.94 mg·kg-1 in the CA. Significant difference on the total amount of NH3 volatilization between the CK and the CA was obtained (P<0.05). However, no evident difference on the total cumulative N2O emission flux between the CK and the CA (P>0.05) was detected. The results indicated that NH3 volatilization was the main ways of nitrogen loss in the aerobic composting process of sheep manure. The nitrogen loss was 50.49% in the CK and 32.63% in the CA. The carbonaceous amendment significantly decreased the nitrogen loss of sheep manure compost (P<0.05). The nitrogen loss can be decreased by 35.37%. |
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