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Special Issue:
农业生态环境-有机碳与农业废弃物还田合辑Agro-ecosystem & Environment—SOC
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| Bentonite-humic acid improves soil organic carbon, microbial biomass, enzyme activities and grain quality in a sandy soil cropped to maize (Zea mays L.) in a semi-arid region |
| ZHOU Lei1, 2, 3, XU Sheng-tao4, Carlos M. MONREAL3, Neil B. MCLAUGHLIN3, ZHAO Bao-ping1, LIU Jing-hui1, HAO Guo-cheng5 |
1 Cereal Industry Collaborative Innovation Center, Inner Mongolia Agricultural University, Hohhot 010019, P.R.China
2 College of Agronomy, Inner Mongolia University for The Nationalities, Tongliao 028000, P.R.China
3 Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON K1A 0C6, Canada
4 Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, P.R.China
5 Inner Mongolia Trirock Co., Ltd., Naiman Banner, Tongliao 028300, P.R.China
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摘要
在退化土壤上施用膨润土-腐植酸能改善土壤物理性质和水文特性，因其有改善土壤结构、提高水分和养分保蓄能力，但是缺少对土壤理化性质和生物学特性及籽粒品质的影响。本文主要研究了在中国半干旱地区沙地上施用30吨/公顷的膨润土-腐植酸后1、3、5和7年的影响。施用膨润土-腐植酸显著提高了土壤充水空隙度和土壤有机碳，尤其是在施用后第3年和5年。沙地上施用膨润土-腐植酸也提高了土壤微生物生物量碳、氮、磷和脲酶、蔗糖酶、过氧化氢酶和碱性磷酸酶的活性。玉米生育时期可分别解释土壤微生物生物量和酶活性总变异度的58%和84%。相比而言，施用膨润土-腐植酸解释了8%的总变异度。膨润土-腐植酸显著改善了半干旱地区土壤性质和玉米对氮磷的吸收。膨润土-腐植酸的利用可成为中国东北及世界上与之有相似土壤和气候的地区修复退化沙地土壤和促进可持续农业发展的一种有效的管理策略。
Abstract A bentonite-humic acid (B-HA) mixture added to degraded soils may improve soil physical and hydraulic properties, due to effects such as improved soil structure and increased water and nutrient retention, but its effect on soil physicochemical and biological properties, and grain quality is largely unknown. The effect of B-HA, added at 30 Mg ha−1, was studied at 1, 3, 5 and 7 years after its addition to a degraded sandy soil in a semi-arid region of China. The addition of B-HA significantly increased water-filled pore space and soil organic carbon, especially at 3 to 5 years after its soil addition to the soil. Amending the sandy soil with B-HA also increased the content of microbial biomass (MB)-carbon, -nitrogen and -phosphorus, and the activities of urease, invertase, catalase and alkaline phosphatase. The significant effect of maize (Zea mays L.) growth stage on soil MB and enzyme activities accounted for 58 and 84% of their total variation, respectively. In comparison, B-HA accounted for 8% of the total variability for each of the same two variables. B-HA significantly enhanced soil properties and the uptake of N and P by maize in semi-arid areas. The use of B-HA product would be an effective management strategy to reclaim degraded sandy soils and foster sustainable agriculture production in northeast China and regions of the world with similar soils and climate.
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Received: 20 July 2020
Accepted: 16 November 2020
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| Fund: We acknowledge the financial support provided by the National Special Fund for Agro-scientific Research in the Public Interest of China (201303126) and Agricultural Science and Technology Achievements Transformation Demonstration of Production and Application Technology and Popularization of Sandy Soil Amendment, Inner Mongolia, China (sq2012eca400008). We also thank the China Scholarship Council–Agriculture and Agri-Food Canada Joint Scholarship Program. |
| About author: ZHOU Lei, Mobile: +86-19997611090, E-mail: zhouleiACE@hotmail.com; Correspondence ZHAO Bao-ping, E-mail: zhaobaoping82@163.com; LIU Jing-hui, E-mail: cauljh@aliyun.com |
Cite this article:
ZHOU Lei, XU Sheng-tao, Carlos M. MONREAL, Neil B. MCLAUGHLIN, ZHAO Bao-ping, LIU Jing-hui, HAO Guo-cheng.
2022.
Bentonite-humic acid improves soil organic carbon, microbial biomass, enzyme activities and grain quality in a sandy soil cropped to maize (Zea mays L.) in a semi-arid region. Journal of Integrative Agriculture, 21(1): 208-221.
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