Effects of Integrated Soil-Crop System Management on Soil Organic Carbon Characteristics in a Primosol in Northeast China

ZHANG Jinjing; CAO Zhiyuan; FENG Guozhong; LI Mengyao; LI Cuilan; GAO Qiang; WANG Lichun

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Effects of Integrated Soil-Crop System Management on Soil Organic Carbon Characteristics in a Primosol in Northeast China

机译：综合农作物系统管理对东北原始土壤土壤有机碳特征的影响

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A synchronous increase in crop productivity,nutrient use efficiency,and soil carbon (C) sequestration is important from the point of view of food security and environmental protection.In recent years,integrated soil-crop system management (ISSM),which uses crop models and advanced nutrient management to redesign cropping systems,has been successfully demonstrated to achieve both high crop productivity and high nutrient use efficiency in China,but the effects of ISSM on soil organic C (SOC)characteristics remain unknown.In this study,the effects of current farmers' practice (FP),high-yielding practice (HY),which maximizes yields without considering costs,and ISSM on the content and chemical composition of SOC were studied in a 4-year (2009-2013) field plot experiment with maize (Zea mays L.) monoculture in an Alluvic Primosol in Northeast China.The ISSM resulted in higher soil total organic C (TOC),water-soluble organic C,easily-oxidizable organic C,particulate organic C,and humic acid C compared with HY and FP in the region.The SOC contents in aggregate size fractions generally followed a similar pattern to TOC.Compared with FP,HY decreased the mean weight diameter,geometric mean diameter,percentage of ＞ 0.25-mm water-stable aggregates,and the stability ratio of water-stable aggregates,and increased the structure-deterioration rate and index of unstable aggregates.The opposite trend was observed between ISSM and HY.Solid-state 13C nuclear magnetic resonance spectra of bulk soil showed that ISSM had higher O-alkyl C and aliphatic C/aromatic C ratio,but lower aromatic C,carbonyl C,and alkyl C/O-alkyl C and hydrophobic C/hydrophilic C ratios than HY and FP.Our results suggest that ISSM improves the quantity and quality of SOC and has a positive effect on soil aggregation and aggregate stability.

机译：从粮食安全和环境保护的角度来看，作物生产力，养分利用效率和土壤固碳的同步增长具有重要意义。近年来，采用作物模型的综合土壤作物系统管理（ISSM）在中国，已经成功地证明了通过先进的养分管理和重新设计耕作系统来实现高作物生产力和高养分利用效率，但ISSM对土壤有机碳（SOC）特征的影响仍然未知。在一项为期4年（2009-2013）的玉米田间试验中，研究了当前的农民实践（FP），高产实践（HY）（不考虑成本而使产量最大化）和ISSM关于SOC的含量和化学成分的研究东北冲积原始土壤中（Zea mays L.）的单培养。ISSM导致较高的土壤总有机碳（TOC），水溶性有机碳，易氧化的有机碳，颗粒状有机碳和腐殖酸C与HY和FP相比。骨料级分中的SOC含量通常与TOC相似。与FP相比，HY减小了平均重量直径，几何平均直径，大于0.25 mm的水稳性骨料的百分比，水稳性团聚体的稳定比，不稳定性团聚体的结构劣化率和指数增加。ISSM与HY之间呈现相反的趋势。大块土的固态13C核磁共振谱表明，ISSM具有较高的稳定性。 O-烷基C和脂肪族C /芳族C的比率，但比HY和FP更低的芳族C，羰基C和烷基C / O-烷基C和疏水性C /亲水C的比率。我们的结果表明ISSM提高了数量和质量SOC，对土壤团聚和团聚体稳定性有积极影响。

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来源
《土壤圈（英文版）》 |2017年第5期|957-967|共11页
作者
ZHANG Jinjing; CAO Zhiyuan; FENG Guozhong; LI Mengyao; LI Cuilan; GAO Qiang; WANG Lichun;
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作者单位

Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118 China;

Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118 China;

Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118 China;

Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118 China;

Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118 China;

Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118 China;

Institute of Agricultural Resources and Environments, Jilin Academy of Agricultural Sciences, Changchun 130124 China;

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
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Effects of Integrated Soil-Crop System Management on Soil Organic Carbon Characteristics in a Primosol in Northeast China

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