Effects of Biochar Application on Nitrogen and Phosphorus Availability in Soils: aReview [PDF]
, 2016 利用生物炭在贫瘠的土壤上培育出肥沃的"黑土"正成为土壤学家研究的热点.氮、磷等大量养分是衡量土壤肥力高低的重要指标,生物炭对其有效性影响表现出极大的复杂性.不同研究得出的结论不尽相同,关键是缺乏对其机制的深入研究.由于氮和磷的不合理利用还可能造成非点源污染而带来环境风险,再加之生物炭施用的不可逆性,必须确保生物炭在任何情况下都不会对土壤和环境带来不利的影响.为此,本文综述了生物炭添加对氮肥和磷肥在土壤-植物系统迁移转化过程中的作用,重点讨论了不同生物炭处理方式对土壤磷素吸附解吸和形态转化的影响 ...
张友 +4 more
core +1 more source
Fungal Diversity and Its Response to Environmental Factors During Decay Process of Salix Psammophila Sand Barriers [PDF]
, 2023 [Objective] The effects of Salix psammophila sand barrier decay on the composition and diversity of fungal communities were analyzed in order to provide a theoretical basis for further research on the ecological function of fungal communities in desert ...
A Latengtaogesu +3 more
core +1 more source
Effects of Continuous Straw Returning Combined with Reduced Fertilizer Application on Rice Yield and Loss of Nitrogen and Phosphorus [PDF]
, 2022 [Objective] The effects of straw returning combined with reduced chemical fertilizer application on rice yield and nitrogen and phosphorus losses with runoff were studied in order to provide a scientific basis for the recycling and reuse of local ...
Liang Fan +8 more
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Effects of Artificial Cyanobacterial Crust on Soil Wind Erosion Control in Arid Regions [PDF]
, 2023 [Objective] The influence factors of artificial cyanobacterial crust on soil threshold wind velocity and wind erosion rate, and the effects of wind erosion prevention and control were analyzed, and the feasibility of using artificial cyanobacterial crust
Gao Liqian, Huang Minghui, Zhao Yunge
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Characteristics and Response of Soil-leaf Ecological Stoichiometry of Suaeda Microphylla and Apocynum Pictum Under Different Salt Habitats [PDF]
, 2023 [Objective] The change trend and main limiting factors of the ecological stoichiometric characteristics of soil and leaves in different saline habitats were analyzed in order to provide basic research data for the study of nutrient limiting factors and ...
Bahebe Lede +5 more
core +1 more source
Effects of Desertification on Phosphorus Fractions of Alpine Meadow Soils [PDF]
, 2023 [Objective] Soil phosphorus fractions determine the migration and availability of phosphorus during soil evolution. The spatial distribution characteristics of soil phosphorus fractions in alpine meadows under different desertification levels were ...
Gao Yongheng +5 more
core +1 more source
Effects of Bio-based Compound Amendments on Overall Soil Fertility of Coastal Saline Soils [PDF]
, 2022 [Objective] The effects of bio-based composite amendments on the physicochemical properties and microbiota of saline soils in the Yellow River delta and the Northern Jiangsu mudflats were determined in order to provide a scientific reference for the ...
Gan Quanfeng +5 more
core +1 more source
Shuitu Baochi Xuebao, 2021 通过采集2014年设置于甘肃省定西市李家堡镇的不同碳源配施氮素田间定位试验土壤进行120天的室内培养试验，利用Stanford间歇淋洗培养法研究了无碳素和氮素添加（N0）、只施氮素（N100）、秸秆配施氮素（SN100）和生物质炭配施氮素（BN100） 4种施肥方式对陇中黄土高原旱作农田土壤氮素矿化的影响。结果表明：秸秆和生物质炭配施氮素提升了表层土壤氮素矿化量，分别比只施氮素显著提升16.5%和15.4%；土壤氮素矿化呈现先快速增加而后迅速下降，降速逐渐转为慢速直至稳定的趋势，硝化速率 ...
王永栋 +5 more
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Shuitu Baochi Xuebao, 2023 为探究秸秆还田条件下长期施用控释掺混尿素对土壤酶活性及养分状况的影响。基于自2008年开始的长期定位施肥田间试验,于2021年小麦返青期、挑旗期、灌浆期和成熟期采集0—20 cm土壤样品,以不施氮肥为对照,研究秸秆还田条件下控释掺混尿素(CRF)和普通尿素(BBF)2种氮肥类型及不施氮(N 0 kg/hm2)、减量(N 120 kg/hm2,N1)、常量(N 240 kg/hm2,N2)和增量(N 360 kg/hm2,N3)4个施氮水平对麦季土壤酶活性及土壤养分的影响,并对指标进行相关性分析。结果表明:
高丽超 +4 more
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Shuitu Baochi Xuebao, 2022 以青岛市大沽河流域砂壤、河潮土、砂姜土3种农田土壤为研究对象,开展室内土柱试验,研究土壤pH、温度、含水率等理化性质与生物炭和氮肥配施对土壤有效磷(Olsen-P)和全磷(TP)淋失的影响,以期为提高农田土壤磷素有效性、减少全磷淋失提供参考依据。结果表明:3种土壤的pH在偏中性或弱碱性时磷素有效性最高,pH偏酸性时,土壤全磷淋失量较大;3种土壤不同土层中的Olsen-P含量随含水率的增加表现为不同的变化规律;3种土壤的磷素有效性均随温度的升高逐渐增大,全磷淋失量随温度的升高逐渐降低;生物炭和氮肥配施 ...
李利霞 +3 more
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