Effects of biochar from different pyrolysis temperatures on soil physical properties and hydraulic characteristics in potato farmland of arid and semi-arid regions

IF 5.9 1区农林科学 Q1 AGRONOMY

Agricultural Water Management Pub Date : 2025-04-15 DOI:10.1016/j.agwat.2025.109483

Jiawei Guo , Hui Zhou , Liguo Jia , Yongqiang Wang , Mingshou Fan

{"title":"Effects of biochar from different pyrolysis temperatures on soil physical properties and hydraulic characteristics in potato farmland of arid and semi-arid regions","authors":"Jiawei Guo , Hui Zhou , Liguo Jia , Yongqiang Wang , Mingshou Fan","doi":"10.1016/j.agwat.2025.109483","DOIUrl":null,"url":null,"abstract":"<div><div>Biochar application is a promising method for improving soil quality; however, the effects of biochar produced at different pyrolysis temperatures on soil physical properties and hydraulic characteristics in arid and semi-arid regions remain unclear. Therefore, a two-year (2023–2024) field experiment was conducted in the northern Yinshan region of China to evaluate the impacts of biochar pyrolysis temperatures (T1: 300 °C, low; T2: 500 °C, medium; T3: 700 °C, high) and application levels (C1: 10 t ha⁻¹, low; C2: 20 t ha⁻¹, medium; C3: 30 t ha⁻¹, high) on soil physical properties, hydraulic characteristics, and their relationship with potato yield. Results indicated that: (1) Compared to the control (CK), the application of biochar significantly reduced soil bulk density, increased soil porosity, and improved the mean weight diameter (MWD) of soil aggregates and the content of water-stable aggregates larger than 0.25 mm (WR0.25); (2) The application of biochar significantly enhanced soil hydraulic characteristics (saturated water content (θs), field capacity (FC), plant available water (PAW), soil moisture content, and soil water storage) and yield. All hydraulic characteristics and potato yield exhibited a generally downward-opening parabolic trend with increased biochar pyrolysis temperature and application rate. Among these, biochar produced at a medium pyrolysis temperature of 500 °C at an application rate of 20 t ha-1 was optimal, resulting in a 27.15 % increase in potato yield compared to the control (CK); (3) Pearson correlation analysis and PCA showed that biochar application promoted potato yield by improving soil hydraulic performance, with hydraulic characteristics being the primary factor influencing potato yield. To enhance potato farmland's physical and hydraulic properties, we recommend a pyrolysis temperature of 500 °C and an application rate of 20 t ha⁻¹ as the optimal biochar model. This study provides a theoretical basis for using biochar to improve soil quality and enhance crop yield in arid and semi-arid regions.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"313 ","pages":"Article 109483"},"PeriodicalIF":5.9000,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agricultural Water Management","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378377425001970","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}

引用次数: 0

Abstract

Biochar application is a promising method for improving soil quality; however, the effects of biochar produced at different pyrolysis temperatures on soil physical properties and hydraulic characteristics in arid and semi-arid regions remain unclear. Therefore, a two-year (2023–2024) field experiment was conducted in the northern Yinshan region of China to evaluate the impacts of biochar pyrolysis temperatures (T1: 300 °C, low; T2: 500 °C, medium; T3: 700 °C, high) and application levels (C1: 10 t ha⁻¹, low; C2: 20 t ha⁻¹, medium; C3: 30 t ha⁻¹, high) on soil physical properties, hydraulic characteristics, and their relationship with potato yield. Results indicated that: (1) Compared to the control (CK), the application of biochar significantly reduced soil bulk density, increased soil porosity, and improved the mean weight diameter (MWD) of soil aggregates and the content of water-stable aggregates larger than 0.25 mm (WR0.25); (2) The application of biochar significantly enhanced soil hydraulic characteristics (saturated water content (θs), field capacity (FC), plant available water (PAW), soil moisture content, and soil water storage) and yield. All hydraulic characteristics and potato yield exhibited a generally downward-opening parabolic trend with increased biochar pyrolysis temperature and application rate. Among these, biochar produced at a medium pyrolysis temperature of 500 °C at an application rate of 20 t ha-1 was optimal, resulting in a 27.15 % increase in potato yield compared to the control (CK); (3) Pearson correlation analysis and PCA showed that biochar application promoted potato yield by improving soil hydraulic performance, with hydraulic characteristics being the primary factor influencing potato yield. To enhance potato farmland's physical and hydraulic properties, we recommend a pyrolysis temperature of 500 °C and an application rate of 20 t ha⁻¹ as the optimal biochar model. This study provides a theoretical basis for using biochar to improve soil quality and enhance crop yield in arid and semi-arid regions.

查看原文本刊更多论文

不同热解温度的生物炭对干旱和半干旱地区马铃薯农田土壤物理特性和水力特性的影响

应用生物炭是一种很有前途的改善土壤质量的方法；然而，在干旱和半干旱地区，不同热解温度下生产的生物炭对土壤物理性质和水力特性的影响尚不清楚。为此，在阴山北部地区进行了为期2年（2023-2024）的野外实验，以评价生物炭热解温度(T1: 300℃，低；T2: 500℃，中等；T3: 700°C，高)和应用水平(C1: 10 t ha¹，低；C2: 20 t ha⁻¹，中；C3: 30 t ha（⁻¹，high）对土壤物理特性、水力特性及其与马铃薯产量的关系的影响。结果表明：(1)与对照（CK）相比，施用生物炭显著降低了土壤容重，增加了土壤孔隙度，提高了土壤团聚体的平均重径（MWD）和大于0.25 mm （WR0.25）的水稳性团聚体含量；(2)施用生物炭显著提高了土壤水力特性（饱和含水量θs、田间容量FC、植物有效水分PAW、土壤含水量和土壤储水量）和产量。随着生物炭热解温度的升高和施用量的增加，各水力特性和马铃薯产量均呈下降的抛物线型趋势。其中，在500℃的中等热解温度下，以20 t ha-1的施用量生产生物炭效果最佳，马铃薯产量比对照（CK）提高27.15 %；(3) Pearson相关分析和主成分分析表明，施用生物炭通过改善土壤水力性能促进马铃薯产量，水力特性是影响马铃薯产量的主要因素。为了提高马铃薯田的物理和水力特性，我们推荐热解温度为500°C，施用量为20 t ha（⁻¹ ）作为最佳生物炭模型。本研究为利用生物炭改善干旱半干旱区土壤质量和提高作物产量提供了理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Agricultural Water Management 农林科学-农艺学

CiteScore

12.10

自引率

14.90%

发文量

648

审稿时长

4.9 months

期刊介绍： Agricultural Water Management publishes papers of international significance relating to the science, economics, and policy of agricultural water management. In all cases, manuscripts must address implications and provide insight regarding agricultural water management.