Impact of long-term manuring and cropping system on stability of humus associated with clay-organic complex

IF 2.3 4区农林科学 Q1 AGRONOMY

Archives of Agronomy and Soil Science Pub Date : 2022-12-28 DOI:10.1080/03650340.2022.2155634

R. Yadav, T. Purakayastha, R. Das, Alimuddin Khan

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引用次数: 1

Abstract

ABSTRACT The objective was to study the impact of ten year’s manuring and fertilization on chemical stability of clay-organic complex (COC) in rice−potato−wheat (R–P–W) and maize−potato−onion (M–P–O) cropping systems. Soil samples were collected from the control, 100% NPK–Fertilizer, 100% N–Vermicompost (VC), 50% NPK–Fertilizer + 50% N–VC, 100% NPK–Fertilizer + crop residue (CR), 100% N–VC + CR. The stability (1/k) of humus C i.e. inverse of humus desorption rate constant (k) in hours (h), in COC was higher in 100% N–VC an1d 00% N–VC + CR in both the cropping systems. The C:N ratio of humic acid (HA) was also higher in the treatments receiving full organics (100% N–VC and 100% N–VC + CR) and showed positive correlation (p < 0.05) with the humus C stability in COC. Long-term manuring treatments created C = N and C–O stretching of aromatic ether in HA extracted from 100% NPK–VC and other selected treatments in both the cropping systems. 100% N–VC and 100%N–VC + CR produced higher stability of humus-C in Inceptisol. The R–P–W imparted higher stability of humus C than M–P–O cropping system.

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长期施肥和耕作制度对土-有机复合体腐殖质稳定性的影响

摘要本研究旨在研究10年施肥对水稻-马铃薯-小麦(R-P-W)和玉米-马铃薯-洋葱(M-P-O)种植体系中粘土-有机复合体(COC)化学稳定性的影响。对照、100%氮磷肥、100% n -蚯蚓堆肥、50%氮磷肥+ 50%氮磷肥、100%氮磷肥+作物残茬(CR)、100%氮磷肥+作物残茬(CR)土壤样品的COC稳定性(1/k)，即腐殖质解吸速率常数(k)的反比(h)，在100%氮磷肥和100%氮磷肥+ CR两种种植制度下均较高。全有机物处理(100% N - vc和100% N - vc + CR)腐殖酸(HA)的C:N比也较高，且与COC中腐殖酸C稳定性呈显著正相关(p < 0.05)。在两种种植制度下，长期施肥处理和其他选择处理均使100% NPK-VC提取的HA中芳香醚的C = N和C - o伸展。100% N-VC和100% N-VC + CR在初始醇中腐殖质- c的稳定性更高。R-P-W比M-P-O更有利于腐殖质碳的稳定性。

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来源期刊

Archives of Agronomy and Soil Science AGRONOMY-SOIL SCIENCE

CiteScore

5.50

自引率

4.20%

发文量

107

期刊介绍： rchives of Agronomy and Soil Science is a well-established journal that has been in publication for over fifty years. The Journal publishes papers over the entire range of agronomy and soil science. Manuscripts involved in developing and testing hypotheses to understand casual relationships in the following areas: plant nutrition fertilizers manure soil tillage soil biotechnology and ecophysiology amelioration irrigation and drainage plant production on arable and grass land agroclimatology landscape formation and environmental management in rural regions management of natural and created wetland ecosystems bio-geochemical processes soil-plant-microbe interactions and rhizosphere processes soil morphology, classification, monitoring, heterogeneity and scales reuse of waste waters and biosolids of agri-industrial origin in soil are especially encouraged. As well as original contributions, the Journal also publishes current reviews.