浙江农业学报 ›› 2024, Vol. 36 ›› Issue (9): 2060-2069.DOI: 10.3969/j.issn.1004-1524.20231039
武佳龙1(), 迟铭2, 高燕3, 王祥4, 沈海鸥1,*(
)
收稿日期:
2023-08-29
出版日期:
2024-09-25
发布日期:
2024-09-30
作者简介:
沈海鸥,E-mail:shensusan@163.com通讯作者:
沈海鸥,E-mail:基金资助:
WU Jialong1(), CHI Ming2, GAO Yan3, WANG Xiang4, SHEN Haiou1,*(
)
Received:
2023-08-29
Online:
2024-09-25
Published:
2024-09-30
摘要:
采用田间原位监测试验方法,设计CK(不施加生物炭)和SW(施加生物炭30 t·hm-2)2个处理,研究施加生物炭当年(5—10月)对东北黑土区坡耕地土壤容重、土壤质量含水率、土壤pH值、电导率、有机质含量和阳离子交换量等主要理化指标的影响。结果表明,施加生物炭当年土壤容重降低,其中,6—10月垄丘土壤容重降低6.42%~11.21%,且随时间延长,其降幅减小。施加生物炭当年6—8月的土壤质量含水率降低,且垄丘的降低幅度小于垄沟,随坡位由上到下,土壤质量含水率的降幅逐渐减小;而9—10月的土壤质量含水率增加,且垄丘的增加幅度大于垄沟,随坡位由上到下,土壤质量含水率的增加幅度逐渐增大。此外,施加生物炭能够增加土壤pH值、有机质含量,减小电导率。综上,施加生物炭当年即可改变土壤主要理化指标,提升土壤质量。
中图分类号:
武佳龙, 迟铭, 高燕, 王祥, 沈海鸥. 施加生物炭对黑土区坡耕地土壤主要理化指标的动态影响[J]. 浙江农业学报, 2024, 36(9): 2060-2069.
WU Jialong, CHI Ming, GAO Yan, WANG Xiang, SHEN Haiou. Effects of biochar application on soil physiochemical indicators at sloping farmland in black soil region[J]. Acta Agriculturae Zhejiangensis, 2024, 36(9): 2060-2069.
图2 施加生物炭对坡耕地土壤容重的影响 Effects of biochar application on soil bulk densities of sloping farmland 柱上无相同大写字母的表示相同月份、坡位下不同处理间差异显著(P<0.05),无相同小写字母的表示相同月份、处理下不同采样位置间差异显著(P<0.05)。
Fig.2 Bars marked without the same uppercase letters indicate significant (P<0.05) difference between treatments in the same month and same sampling position, while bars marked without the same lowercase letters indicate significant (P<0.05) difference within the sampling positions in the same month under the same treatment.
图3 不同处理坡耕地5—10月土壤(0~20 cm土层)质量含水率的变化
Fig.3 Changes of soil mass water content in 0-20 cm soil layer at sloping farmland from May to October under treatments
图4 不同处理坡耕地各土层的土壤质量含水率 柱上无相同大写字母的表示相同月份、坡位和土层深度下不同处理间差异显著(P<0.05),无相同小写字母的表示相同处理、月份和坡位下不同土层间差异显著(P<0.05)。
Fig.4 Mass water contents of different soil layers in sloping farmland under treatments Bars marked without the same uppercase letters indicate significant (P<0.05) difference between treatments in the same month, same soil layer and same sampling position, while bars marked without the same lowercase letters indicate significant (P<0.05) difference within soil layers in the same month, sample sampling position under the same treatment.
采样时间 Sampling time | 处理 Treatment | pH | EC/(mS·m-1) | SOM/(g·kg-1) | CEC/(cmol·kg-1) |
---|---|---|---|---|---|
5月May | CK | 5.79±0.04 Ab | 0.91±0.07 Aa | 23.03±0.99 Ab | 18.38±1.09 Aa |
SW | 5.60±0.03 Bc | 0.97±0.04 Aa | 21.38±0.33 Bc | 18.23±0.15 Aa | |
8月August | CK | 5.81±0.05 Bb | 0.56±0.02 Ab | 24.41±1.15 Bab | 17.87±0.41 Aa |
SW | 6.16±0.26 Ab | 0.86±0.26 Aa | 30.32±1.55 Ab | 17.51±0.30 Ab | |
10月October | CK | 6.06±0.14 Ba | 0.66±0.09 Ab | 26.63±2.05 Ba | 18.45±0.17 Aa |
SW | 6.45±0.06 Aa | 0.50±0.02 Bb | 41.60±3.48 Aa | 18.68±0.51 Aa |
表1 施加生物炭对坡耕地土壤化学指标的影响
Table 1 Effects of biochar application on soil chemical indicators of sloping farmland
采样时间 Sampling time | 处理 Treatment | pH | EC/(mS·m-1) | SOM/(g·kg-1) | CEC/(cmol·kg-1) |
---|---|---|---|---|---|
5月May | CK | 5.79±0.04 Ab | 0.91±0.07 Aa | 23.03±0.99 Ab | 18.38±1.09 Aa |
SW | 5.60±0.03 Bc | 0.97±0.04 Aa | 21.38±0.33 Bc | 18.23±0.15 Aa | |
8月August | CK | 5.81±0.05 Bb | 0.56±0.02 Ab | 24.41±1.15 Bab | 17.87±0.41 Aa |
SW | 6.16±0.26 Ab | 0.86±0.26 Aa | 30.32±1.55 Ab | 17.51±0.30 Ab | |
10月October | CK | 6.06±0.14 Ba | 0.66±0.09 Ab | 26.63±2.05 Ba | 18.45±0.17 Aa |
SW | 6.45±0.06 Aa | 0.50±0.02 Bb | 41.60±3.48 Aa | 18.68±0.51 Aa |
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[9] | 崔宁波, 生世玉. 粮食安全视角下的东北黑土区耕地生态补偿研究[J]. 浙江农业学报, 2021, 33(9): 1759-1769. |
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[11] | 徐民民, 黄莹, 李波, 徐艳, 张帅, 姚岭芸, 王政. 生物炭对小麦根际和根内微生物群落结构的影响[J]. 浙江农业学报, 2021, 33(3): 516-525. |
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[15] | 王代懿, 张丰松, 潘娟, 刘登璐, 苟体忠. 水稻秸秆生物炭对雄烯二酮在土壤中吸附与降解行为的影响[J]. 浙江农业学报, 2018, 30(4): 632-639. |
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摘要 134
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