Long‐term fertilisation causes excess supply and loss of phosphorus in purple paddy soil

Zhang, Yueqiang; Wen, Mao; Li, Xueping; Shi, Xiaojun

doi:10.1002/jsfa.6390

Cited by 17 publications

(8 citation statements)

References 32 publications

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“…The increased attention being paid to the loss of nitrate via agricultural drainage has led many to call for significant changes in both management of N fertilizer and management of agricultural drainage systems [17]. Overall, current agronomic guidelines, which are primarily based on crop response, may inadequately protect the water quality in Southern China [18]. Although positive results were obtained by applying AWD technology in rice fields, the drainage volume in AWD has been reported to be larger due to the excessive drainage requirement, which results in an increase in nitrate losses from the agricultural fields [19,20].…”

Section: Discussionmentioning

confidence: 99%

Potential of Controlled Irrigation and Drainage for Reducing Nitrogen Emission from Rice Paddies in Southern China

Shao

Wang

et al. 2015

Journal of Chemistry

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The effect of controlled irrigation and drainage (CID) at different growth stages of rice on nitrogen (N) from rice paddy was studied. Submergence at different stages was imposed in specially designed experimental tanks in 2009 and 2010 based on alternate wetting and drying technology (AWD, the control, CK). Treatments include CID treatment at tiller stage (T1), jointing-booting stage (T2), panicle initiation stage (T3), and milky stage (T4). Results showed that fertilization could significantly increase the concentration ofNH4+-N and TN in surface water but had a little influence onNO3--N. The concentrations ofNH4+-N andNO3--N in surface water increased at first and then decreased after fertilization, while the concentrations ofNH4+-N and TN in groundwater kept on being relatively stable. Compared to CK, CID significantly increased the concentration ofNH4+-N in surface water at four stages. However, it reduced the concentration ofNO3--N. Consistent with the reduction of drainage, CID at four stages could significantly decrease the amount ofNH4+-N andNO3--N losses by runoff in relation to CK.

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Section: Discussionmentioning

confidence: 99%

Potential of Controlled Irrigation and Drainage for Reducing Nitrogen Emission from Rice Paddies in Southern China

Shao

Wang

et al. 2015

Journal of Chemistry

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“…Application of P fertilizers can result in massive accumulation of P in topsoil and contents of total soil P increased with application rate (Zhang et al 2014). The P status under CK treatment was usually Bnegative^due to the uptake by crops while it was Bredundant^when long-term P fertilizers were repeatedly applied (Li et al 2011).…”

Section: Distribution Of Colloids and P Coll In Soil Profilementioning

confidence: 98%

Release and migration of colloidal phosphorus from a typical agricultural field under long-term phosphorus fertilization in southeastern China

et al. 2015

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Purpose Colloid-facilitated migration of phosphorus (P) is a widely accepted phenomenon in surface and subsurface environment. Release and migration of colloidal P (P coll ) in agricultural fields are closely related to P fertilization regimes. In this study, a site-specific experiment with rice/oilseed rape rotation was conducted to determine the export potential of P coll from the field and literatures reporting the impact of P fertilization regimes on release and migration of P coll in other agricultural fields were compared. Materials and methods In this 2-year field experiment, four P fertilization regimes (no fertilizer control, inorganic P fertilizer of low and high rates, and swine manure treatment) with three replicates were conducted. Floodwater and runoff samples were collected in flooding season and the 100-cm-depth soil samples were collected after both crops' harvest seasons. Colloidal particles were separated by microfiltration and ultracentrifugation processes and determined gravimetrically. The P coll value was calculated as the difference between the concentration of total P in non-ultracentrifuged and ultracentrifuged samples. The same method was applied for the colloidal mineral elements (Fe and Al) and organic carbon.Results and discussion Total P concentration in paddy floodwater significantly increased after fertilization but decreased quickly in the following days, maintaining at 6.0 mg m −2 . In soil extracts, concentration of P coll was low but stable, which ranged from 6 to 22 % of total P after oilseed rape season and from 7 to 18 % after rice season. In runoff samples, there were positive correlations between P coll , colloidal Fe (Fe coll ), colloidal Al (Al coll ), and colloidal TOC (TOC coll ); the majority of P forms was molybdate reactive P. In both crops' seasons, the amount of colloids increased with soil depth. Content of soil P coll was low and occupied 0.1-2 % of total P. The literature review showed that P coll in soil solution, runoff, and leachate ranged from 1.4 to 94 % of total P. Conclusions These results suggested that although the concentrations of P coll were not high, they widely distributed in paddy floodwater, runoff, and soil profile. Fertilization regimes and planting systems had a significant influence on the contents of P coll . Moreover, the P coll binding with Fe/Al minerals and organic carbon might be an alternative route of P loss in paddy field.

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“…production but also causes a series of problems such as soil acidification, risk of pollution, and nutrient imbalance (Guo et al, 2010;Liu et al, 2013;Peñuelas et al, 2013;Zhang et al, 2014). China consumed 33% of world N fertilizer (FAO 2014, available at www.fao.org/publications/sofa), and the N use efficiency in the paddy field was 39%, lower than the global average level (Yu and Shi, 2015).…”

Section: G R a P H I C A L Abstractmentioning

confidence: 99%

Effects of different fertilization practices on anammox activity, abundance, and community compositions in a paddy soil

Sun

Luo

et al. 2021

Soil Ecol. Lett.

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The return of crop residue and green manure into agricultural soil is known to be important agricultural management strategies, yet how they affect the anammox process remains poorly characterized. A field experiment containing four treatments: chemical fertilizer (F), F plus rice straw (FS), FS plus green manure (FSM), FSM with integrated management (FSMM), was performed to examine the effects of incorporation of rice straw and green manure residues on anammox. The results showed that the anammox activities in FS and FSM treatments (0.65 and 0.80 nmol N g -1 soil h -1 , respectively) were significantly lower than those in F and FSMM treatments (1.60 and 1.28 nmol N g -1 soil h -1 , respectively). Anammox contributed 4.07%-4.95% of total N loss in soil incorporated with residues, lower than soil treated with chemical fertilizer only (9.13%), the remaining being due to denitrification. However, the abundance of the hzsB gene (the hydrazine synthase β-subunit gene) in FS and FSM treatments (1.13 Â 10 6 and 1.18 Â 10 6 copies g -1 soil) were significantly higher than soil using chemical fertilizer only (7.49 Â 10 5 copies g -1 soil) while showed no significant difference with FSMM treatment (8.81 Â 10 5 copies g -1 soil). Illumina sequencing indicated that Brocadia was the dominant anammox genus, following by Scalindua and Kuenenia. Anammox bacterial diversity was altered after 4-year incorporation of rice straw and green manure, as shown by α-diversity indices. We concluded that rice straw and green manure incorporated with mineral fertilizer reduce N removal from paddy soil in terms of anammox in spite of stimulating anammox bacterial growth.

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Long‐term fertilisation causes excess supply and loss of phosphorus in purple paddy soil

Cited by 17 publications

References 32 publications

Potential of Controlled Irrigation and Drainage for Reducing Nitrogen Emission from Rice Paddies in Southern China

Potential of Controlled Irrigation and Drainage for Reducing Nitrogen Emission from Rice Paddies in Southern China

Release and migration of colloidal phosphorus from a typical agricultural field under long-term phosphorus fertilization in southeastern China

Effects of different fertilization practices on anammox activity, abundance, and community compositions in a paddy soil

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