Occurrence characteristics and release risks of phosphorus in sediment of field-ditch-pond system

doi:10.14088/j.cnki.issn0439-8114.2025.07.011

Abstract

Abstract: The phosphorus adsorption characteristics of sediments in different units of the field-ditch-pond system and the influence of phosphorus occurrence forms on adsorption characteristics were systematically analyzed through phosphorus adsorption test. The results showed that the Langmuir isotherm model accurately described phosphorus adsorption. Field soils exhibited stable phosphorus adsorption, while pond and ditch sediments showed considerable variability, with some pond sites presenting a high risk of phosphorus release. Phosphorus occurrence forms analysis revealed that higher organic phosphorus content correlated with lower adsorption capacity. Significant changes in phosphorus adsorption capacity were observed before and after rice planting, with ditch sediment adsorption notably increasing during the rice growing period and field soil adsorption further enhancing after rice harvest. Rational management of fields, ditches and ponds could mitigate phosphorus release and help reduce agricultural non-point source pollution.

Key words: phosphorus, occurrence forms, desorption, field, ditch, pond, non-point source pollution, release risk

CLC Number:

XIA Bi-qing, LI Si-si, ZHUANG Yan-hua, LIU Hong-bin, ZHANG Liang. Occurrence characteristics and release risks of phosphorus in sediment of field-ditch-pond system[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(7): 61-67.

References

[1] 俞映倞,杨林章,李红娜,等.种植业面源污染防控技术发展历程分析及趋势预测[J].环境科学,2020,41(8):3870-3878.
[2] 朱兆良,孙波. 中国农业面源污染控制对策研究[J]. 环境保护,2008,36(8):4-6.
[3] SALVAGIOTTI F,BARRACO M,DIGNANI D,et al.Plant stand,nodulation and seed yield in soybean as affected by phosphate fertilizer placement,source and application method[J]. European journal of agronomy,2013,51:25-33.
[4] 娄梦玉,薛华龙,郭彬彬,等.施磷水平与冬小麦产量和土壤有效磷含量的关系[J]. 植物营养与肥料学报,2022,28(9):1582-1593.
[5] 宋立芳,王毅,吴金水,等.水稻种植对中亚热带红壤丘陵区小流域氮磷养分输出的影响[J].环境科学,2014,35(1):150-156.
[6] 张雷,张峥,柴宁,等.稻田种植对地表径流污染状况调查研究[J].中国环境监测,2022,38(2):123-128.
[7] 单立楠,丁能飞,王洪才,等.蔬菜地面源污染生态拦截系统与效果[J].农业工程学报,2013,29(20):168-178.
[8] 邓雄. 农业非点源污染的研究进展、存在的问题及发展[J].中山大学学报(自然科学版),2007,46(S2):244-247.
[9] ZHU B,WANG Z H,ZHANG X B.Phosphorus fractions and release potential of ditch sediments from different land uses in a smallcatchment of the Upper Yangtze River[J]. Journal of soils and sediments,2012,12(2):278-290.
[10] 张志斌,王书义,张彦浩,等.南四湖消落带底泥有机磷赋存形态及分布特征[J].湖泊科学,2023,35(5):1647-1658.
[11] ZHOU A M,TANG H X,WANG D S.Phosphorus adsorption on natural sediments:Modeling and effects of pH and sediment composition[J]. Water research,2005,39(7):1245-1254.
[12] RUBAN V,LÓPEZ-SÁNCHEZ J F,PARDO P,et al. Development of a harmonised phosphorus extraction procedure and certification of a sediment reference material[J]. Journal of environmental monitoring,2001,3(1):121-125.
[13] JIN X C,WANG S R,CHU J Z,et al.Organic phosphorus in shallow lake sediments in middle and lower reaches of the Yangtze River area in China[J]. Pedosphere,2008,18(3):394-400.
[14] 俞振飞,王国祥,钱君龙,等.SMT法测定沉积物标准样品有机磷形态分析方法探究[J]. 中国环境监测,2013,29(3):117-122.
[15] LI X C,HUANG L,FANG H W,et al.Phosphorus adsorption by sediment considering mineral composition and environmental factors[J]. Environmental science and pollution research international,2021,28(14):17495-17505.
[16] WANG S R,JIN X C,ZHAO H C,et al.Effect of organic matter on the sorption of dissolved organic and inorganic phosphorus in lake sediments[J]. Colloids and surfaces A:Physicochemical and engineering aspects,2007,297(1-3):154-162.
[17] BOITT G,SIMPSON Z P,TIAN J H,et al.Plant biomass management impacts on short-term soil phosphorus dynamics in a temperate grassland[J]. Biology and fertility of soils,2018,54(3):397-409.
[18] WANG K K,REN T,CONG R H,et al.Reduction of chemical phosphate fertilizer application in a rice-rapeseed cropping system through continuous straw return[J]. Field crops research,2024,312:109399.
[19] 连神海,张树楠,刘锋,等.不同生物炭对磷的吸附特征及其影响因素[J].环境科学,2022,43(7):3692-3698.
[20] 刘慧,张伟康,李蒋戈野,等.不同生物质炭对棕壤中磷素吸附解吸的影响[J].土壤,2023,55(6):1198-1206.