Effect of a Urea and Urease/Nitrification Inhibitor Combination on Rice Straw Hydrolysis and Nutrient Turnover on Rice Growth

文献类型： 外文期刊

第一作者： Yu, Chunxiao

作者： Yu, Chunxiao;Zhang, Lili;Yang, Lijie;Li, Wentao;Wu, Kaikuo;Li, Dongpo;Wu, Zhijie;Yu, Chunxiao;Li, Wentao;Wu, Kaikuo;Yang, Lijie;Bai, Wei;Feng, Chen

作者机构：

关键词： Enzyme mechanisms; C and N turnover; Stabilized fertilizer; Paddy soil; Rice straw

期刊名称：BIORESOURCES （ 影响因子：1.409； 五年影响因子：1.52 ）

ISSN： 1930-2126

年卷期： 2021 年 16 卷 2 期

页码：

收录情况： SCI

摘要： Stabilized fertilizers that contain nitrification inhibitors and/or urease inhibitors are widely used in China. A pot experiment was conducted to analyze soil enzymatic characteristics related to carbon and nitrogen turnover and metabolism under the use of rice straw and stabilized fertilizer. Results showed that stabilized fertilizer exhibited the highest yield production, panicle numbers, and above-ground biomass. Compared with urea treatment with straw, adding inhibitors reduced soil organic carbon and the enzyme activity related to acquisition of carbon, but increased soil organic carbon accumulation, rice yield, and above-ground biomass. Stabilized fertilizer increased protease activity; however, it decreased N-acetyl-6-glucosaminide. Addition of straw significantly increased dissolved organic and microbial biomass carbon or nitrogen, as well as the enzyme activities of a-D-glucosidase, 6-D-glucosidase, 6-Nacetyl-glucosidase, and cellulase at the seedling and tillering stages. The principal components analysis showed that the synthesis of extracellular enzyme related to carbon and nitrogen acquiring act as a proxy for straw decomposing under nitrogen conditions. The combination delayed the release of ammonia, which affected the carbon and nitrogen coupling by microbial organisms. These results demonstrated a relationship between soil carbon and nitrogen dynamics and soil enzymes in different fertilization management.

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