减氮配施生物炭对南方红壤紫花苜蓿生长及土壤酶活性的影响

doi:10.3969/j.issn.1004-1524.20241011

浙江农业学报 ›› 2026, Vol. 38 ›› Issue (6): 1236-1245.DOI: 10.3969/j.issn.1004-1524.20241011

减氮配施生物炭对南方红壤紫花苜蓿生长及土壤酶活性的影响

王蓉丽¹(), 徐子歆², 张镇武¹, 吴慧欣¹, 邢承华¹^,^*()

¹ 金华职业技术大学农学院, 浙江金华 321007
² 浙江师范大学生命科学学院, 浙江金华 321001

收稿日期:2024-11-21 出版日期:2026-06-25 发布日期:2026-07-14
作者简介:王蓉丽,主要从事植物生理及环境生态研究。E-mail:646602446@qq.com
通讯作者: ^*邢承华,E-mail:xingchenghua@hotmail.com
基金资助:
金华市农业类重点项目(2022-2-027);金华市农业类重点项目(2022-2-028)

Effects of nitrogen reduction combined with biochar application on the growth and soil enzyme activity of alfalfa in southern red soil

WANG Rongli¹(), XU Zixin², ZHANG Zhenwu¹, WU Huixin¹, XING Chenghua¹^,^*()

¹ College of Agriculture, Jinhua University of Vocational Technology, Jinhua 321007, Zhejiang, China
² College of Life Sciences, Zhejiang Normal University, Jinhua 321001, Zhejiang, China

Received:2024-11-21 Published:2026-06-25 Online:2026-07-14

摘要/Abstract

摘要：

为探明减氮配施生物炭对南方红壤紫花苜蓿生长及土壤酶活性的影响,设置CK、N100、N80、N80+BC、N60及N60+BC共6个处理,测定不同处理下各生育期紫花苜蓿的株高、叶面积、根系活力、鲜重以及土壤脲酶、酸性磷酸酶和过氧化氢酶活性。结果表明,N80+BC处理在各生育期均表现出最佳的促生效应,其株高、叶面积、根系活力和鲜草产量均高于其他处理。成熟期时,N80+BC处理的上述指标较CK分别显著提高25.12%、42.77%、194.11%和247.23%,较N80分别显著提高26.87%、31.53%、41.57%和45.03%;其土壤脲酶、酸性磷酸酶和过氧化氢酶活性也最高,较CK分别显著提高38.46%、29.22%和59.90%,较N80分别显著提高31.71%、29.09%和33.20%。综上,减氮配施生物炭能够促进南方红壤紫花苜蓿生长并提高土壤酶活性,其中减氮20%配施生物炭处理效果最佳。

关键词: 减氮施肥, 生物炭, 紫花苜蓿, 土壤酶活性, 南方红壤

Abstract:

To investigate the effects of nitrogen reduction combined with biochar application on the growth of alfalfa and soil enzyme activities in the southern red soil, six treatments were established: CK, N100, N80, N80+BC, N60, and N60+BC. The plant height, leaf area, root activity, fresh grass production of alfalfa, and the activities of soil urease, acid phosphatase, and catalase were measured at different growth stages under each treatment. The results showed that the N80+BC treatment exhibited the best growth-promoting effects at all growth stages, with higher plant height, leaf area, root activity, and fresh forage yield than the other treatments. At the maturity stage, the above indicators under the N80+BC treatment were significantly increased by 25.12%, 42.77%, 194.11%, and 247.23% compared with CK, and by 26.87%, 31.53%, 41.57%, and 45.03% compared with N80, respectively. The activities of soil urease, acid phosphatase, and catalase under the N80+BC treatment were also the highest, which were significantly increased by 38.46%, 29.22%, and 59.90% compared with CK, and by 31.71%, 29.09%, and 33.20% compared with N80, respectively. In summary, nitrogen reduction combined with biochar application can promote the growth of alfalfa and increase soil enzyme activities in the red soil region of southern China, with the treatment of 20% nitrogen reduction combined with biochar showing the best effects.

Key words: reduced nitrogen fertilization, biochar, alfalfa, soil enzyme activity, southern red soil

中图分类号:

王蓉丽, 徐子歆, 张镇武, 吴慧欣, 邢承华. 减氮配施生物炭对南方红壤紫花苜蓿生长及土壤酶活性的影响[J]. 浙江农业学报, 2026, 38(6): 1236-1245.

WANG Rongli, XU Zixin, ZHANG Zhenwu, WU Huixin, XING Chenghua. Effects of nitrogen reduction combined with biochar application on the growth and soil enzyme activity of alfalfa in southern red soil[J]. Acta Agriculturae Zhejiangensis, 2026, 38(6): 1236-1245.

图/表 7

图1 不同处理对紫花苜蓿株高的影响同时期不同处理间柱上无相同小写字母表示差异显著(p<0.05)。下同。

Fig.1 Effect of different treatments on alfalfa plant height Columns in the same period marked without the same letter indicate significant(p<0.05) difference among treatments. The same as below.

图2 不同处理对紫花苜蓿叶面积的影响

Fig.2 Effect of different treatments on alfalfa leaf area

图3 不同处理对紫花苜蓿根系活力的影响

Fig.3 Effect of different treatments on alfalfa root activity

图4 不同处理对紫花苜蓿鲜草产量的影响

Fig.4 Effect of different treatments on fresh yield of alfalfa

图5 不同处理对土壤脲酶活性的影响

Fig.5 Effect of different treatments on soil urease activity

图6 不同处理对土壤酸性磷酸酶活性的影响

Fig.6 Effect of different treatments on soil acid phosphatase activity

图7 不同处理对对土壤过氧化氢酶活性的影响

Fig.7 Effect of different treatments on soil catalase activity

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减氮配施生物炭对南方红壤紫花苜蓿生长及土壤酶活性的影响

Effects of nitrogen reduction combined with biochar application on the growth and soil enzyme activity of alfalfa in southern red soil

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