Comparative study on the application of straw, biochar, dimethylpyrazole phosphate, and polyaspartic acid on nitrogen cycle, soil properties, and yield of potted rice

文献类型： 外文期刊

第一作者： Jia, Lexin

作者： Jia, Lexin;Chen, Yanxue;Wang, Ziyi;Niu, Chaodan;Yang, Jinhui;Liu, Tai;Liu, Hongbin;Wang, Hongyuan;Wu, Chengyuan

作者机构：

关键词： Comparative study; Straw; Biochar; Nitrification inhibitor; PASP; Pot rice

期刊名称：PLANT AND SOIL （ 影响因子：4.1； 五年影响因子：4.7 ）

ISSN： 0032-079X

年卷期： 2025 年 512 卷 1-2 期

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收录情况： SCI

摘要： Aims Straw, biochar, dimethylpyrazole phosphate (DMPP), and polyaspartic acid (PASP) are promising materials to improve soil productivity and alleviate agricultural pollution. However, the comparison of these four materials in rice cultivation, in terms of fertilizer use efficiency and crop yield enhancement, remains limited. A pot experiment was therefore conducted to elucidate the comparative impacts of these materials on gaseous nitrogen loss, rice growth, nutrient uptake, soil properties, and soil nitrifying bacteria during different growth stages with the aim of identifying the optimal material facilitating rice production. Methods Six treatments were designed as follows: no nitrogen fertilizer (PK), conventional fertilization (NPK), partial substitution of nitrogen in NPK with straw (NPKS), partial substitution of nitrogen in NPK with biochar (NPKC), NPK plus DMPP application (NPKD), and NPK plus PASP application (NPKP). Results For the whole growth period, the inhibition of NH3 volatilization only occurred in NPKP (17.22%) in comparison with NPK, while DMPP and PASP effectively reduced N2O emissions by 40.54% and 25.29%, respectively. Moreover, all materials contributed to nitrogen fixation in soil while significantly decreasing the population of AOB bacteria, with PASP and straw demonstrating a significant inhibitory effect on AOA bacteria. Furthermore, straw was more favorable to nutrient uptake and utilization by rice, inducing additional accumulation of nitrogen (71.96%), phosphorus (21.03%), and potassium (14.97%). Lastly, straw, DMPP, and PASP increased the rice yield (> 6%), whereas the impact of biochar was less pronounced. Conclusion When considering factors such as environment, soil properties and crop yield, the application of biodegradable PASP demonstrates comprehensive advantages in rice cultivation.

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