Effect of NH 4 + and NO 3 - cooperatively regulated carbon to nitrogen ratio on organic nitrogen fractions during rice straw composting

The purpose of this study was to examine the effects of replacing urea with inorganic nitrogen on the organic nitrogen sequestration process and the mitigation of nitrogen loss during rice straw composting. These groups include a control group with urea addition (CK), a group with (NH ) SO addition...

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Published in:Bioresource technology 2024-03, Vol.395, p.130316
Main Authors: Sun, Rui, Zhu, Xide, Wang, Chao, Yue, Jieyu, Pan, Lina, Song, Caihong, Zhao, Yue
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container_title Bioresource technology
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Zhu, Xide
Wang, Chao
Yue, Jieyu
Pan, Lina
Song, Caihong
Zhao, Yue
description The purpose of this study was to examine the effects of replacing urea with inorganic nitrogen on the organic nitrogen sequestration process and the mitigation of nitrogen loss during rice straw composting. These groups include a control group with urea addition (CK), a group with (NH ) SO addition (NH), a group with KNO addition (NO), and a group with (NH ) SO  + KNO addition (NN). The results demonstrated that adding NH, NO, and NN significantly increased the content of bioavailable organic nitrogen in the composting. Furthermore, compared to the CK, the NH treatment reduced nitrogen loss by 8.41 %. Structural equation modeling revealed the correlation between bacterial communities and organic nitrogen fractions in different treatment groups. Comparisons of nitrogen efficacy and nitrogen loss indicated that adding (NH ) SO was more effective during composting, which provided a meaningful research basis for rice straw composting.
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title Effect of NH 4 + and NO 3 - cooperatively regulated carbon to nitrogen ratio on organic nitrogen fractions during rice straw composting
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