保护性农业对玉米-小麦(Triticum aestivum)和木豆-小麦种植体系下腐殖酸品质和粘土腐殖质复合体的影响

IF 0.3 4区 农林科学 Q4 AGRICULTURE, MULTIDISCIPLINARY Indian Journal of Agricultural Sciences Pub Date : 2023-09-26 DOI:10.56093/ijas.v93i9.138932
ABHISHEK DAS, NAYAN AHMED, T J PURAKAYASTHA, SUNANDA BISWAS, PRASENJIT RAY, BINDER SINGH, T K DAS, RAJESH KUMAR, ACHAL LAMA
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引用次数: 0

摘要

为了获得保护性农业(CA)条件下土壤碳(C)和顽固性碳变化的有价值信息,对腐殖酸(HA)质量和粘土腐殖质复合体进行了研究。值得一提的是,CA在研究人员和农民中得到了更广泛的接受。在新德里icar -印度农业研究所(ICAR-Indian Agricultural Research Institute)对玉米(Zea mays L.)-小麦(Triticum aestivum L.) (M-W)和豇豆(Cajanus cajan L.)-小麦(P-W)种植体系进行了常规耕作(CT)、免耕(ZT)和免耕留茬(ZT+R) 3种处理的ineptisol田间试验,以E4/E6比和总酸度为指标对HA进行了定性,并明确了粘土腐殖质复合物的官能基。在ZT+R处理中,较低的E4/E6比和提取的HA总酸度表明腐殖酸碳(HA- c)的腐殖酸化程度和稳定性较高。从土壤中提取的粘土-腐殖质复合物的FTIR光谱显示,在ZT+R处理中存在大量官能团,其次是ZT和CT处理。除小麦外,两种种植制度下ZT+R的作物产量均显著高于CT。因此,ZT+R具有提高土壤有机碳(C)质量,增加HA芳香性,实现土壤碳稳定的潜力。
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Impact of conservation agriculture on humic acid quality and clay humus complexation under maize (Zea mays)-wheat (Triticum aestivum) and pigeon pea (Cajanus cajan)-wheat cropping systems
An attempt was made to study the humic acid (HA) quality and clay humus complex in order to generate valuable information regarding soil carbon (C) and recalcitrant carbon variations under conservation agriculture (CA) practices. It is worthwhile to mention that CA has got wider acceptance among researchers and farmers nowadays. A field experiment was conducted in an Inceptisol with three treatments, namely conventional tillage (CT), zero tillage (ZT) without residue and zero tillage with residue (ZT+R) in a maize (Zea mays L.)-wheat (Triticum aestivum L.) (M-W) and pigeon pea (Cajanus cajan L.)-wheat (P-W) cropping system at ICAR-Indian Agricultural Research Institute, New Delhi, with a view to characterize the HA by E4/E6 ratio and total acidity, and to specify the functional groups of clay humus complex. In ZT+R based treatments, lower E4/E6 ratio and total acidity of extracted HA showed higher degree of humification and stability of humic acid carbon (HA-C). The FTIR spectroscopy of the clay-humus complex (as extracted from soil) displayed the presence of a large number of functional groups in ZT+R treatment followed by ZT and CT. It was also observed that the yield of crops was also significantly higher in ZT+R than CT in both the cropping systems except in wheat crops in the M-W system. Therefore, it can be concluded that ZT+R has the potential to enrich the organic carbon (C) quality in soil and increase the aromaticity of HA, leading to carbon stabilization in soils.
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来源期刊
Indian Journal of Agricultural Sciences
Indian Journal of Agricultural Sciences 农林科学-农业综合
CiteScore
0.80
自引率
25.00%
发文量
273
审稿时长
6 months
期刊介绍: The Indian Journal of Agricultural Sciences publishes papers concerned with the advancement of agriculture throughout the world. It publishes original scientific work related to strategic and applied studies in all aspects of agricultural science and exploited species, as well as reviews of scientific topics of current agricultural relevance. Specific topics of interest include (but are not confined to): genetic resources, all aspects of crop improvement,crop production,crop protection, physiology, modeling of crop systems, the scientific underpinning of agronomy, engineering solutions, decision support systems, land use, environmental impacts of agriculture and forestry, impacts of climate change, rural biodiversity, experimental design and statistical analysis, the application of new analytical and study methods (including molecular studies) and agricultural economics. The journal also publishes book reviews. Articles are accepted on the following broad disciplines: Agric. Engineering & Technology, Agric. Social & Economic Sci., Agronomy, Biometry, Biosciences, Cytology, Ecology, Environmental Sciences, Fertilization, Forestry , Genetics, Horticultural Sciences, Microbiology, Pest, Weed Control etc., Molecular Biology, Plant Pathology, Plant Breeding, Physiology and Biochemistry, Soil Sciences, Special Cultivation Technology, Stress Breeding, Agric. extension, and Cell Biology.
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