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Changes in quantity and quality of organic matter in soil after application of poultry litter and poultry litter biochar—5-year field experiment
Biomass Conversion and Biorefinery ( IF 4 ) Pub Date : 2020-09-25 , DOI: 10.1007/s13399-020-01005-4
Renata Jarosz , Monika Mierzwa-Hersztek , Krzysztof Gondek , Michał Kopeć , Tomáš Lošák , Lidia Marcińska-Mazur

Changes of the addition of poultry litter (PL) and poultry litter biochar (PLB) on quantitative and qualitative humus parameters in loamy sand were estimated during the 5-year study period. The following properties were determined in soil: pH, total carbon (Ctotal), total nitrogen (Ntotal), humic and fulvic acids, extracted carbon, and non-hydrolysing carbon. Additionally, light absorbance in the solutions of humic acids was computed at the wavelength of 280, 465, and 665 nm. It was demonstrated that organic matter mineralisation was most intense in soil with the addition of PL, causing significant quantitative and qualitative changes in humus compounds in soil. A slower rate of organic matter mineralisation was observed in soil amended with PLB, especially in a dose of 5.0 t ha−1, which indicated the long-term effect of this material on improving soil properties. Spectrophotometric indexes for the solution of humic acids also showed that PLB had a more favourable effect on the structure durability and lower mobility of humic acid carbon compared with PL. The application of PL and PLB significantly increased the non-hydrolysing carbon content in soil, indicating greater stabilisation of humus compounds and, at the same time, lower CO2 emissions. It was found that the addition of organic materials to soil significantly increased the soil organic carbon contents. Our study has shown that the identification of changes that may occur in the quantitative and qualitative composition of soil humus after the application of PLB may be helpful in determining the appropriate biochar dose.



中文翻译:

应用家禽垃圾和家禽垃圾生物炭后5年田间试验土壤有机质的数量和质量的变化

在为期5年的研究期内,估算了家禽垫料(PL)和家禽垫料生物炭(PLB)的含量对质壤土中腐殖质参数的变化。在土壤中测定了以下特性:pH,总碳(总碳),总氮(N总),腐殖酸和富里酸,提取的碳和非水解碳。另外,计算了在280、465和665 nm波长下的腐植酸溶液中的吸光度。结果表明,添加PL后,土壤中有机物的矿化作用最为强烈,从而导致土壤中腐殖质化合物的数量和质量发生了显着变化。在用PLB改良的土壤中观察到有机物矿化速率降低,尤其是在5.0 t ha -1的剂量下,表明该材料对改善土壤性质具有长期影响。腐殖酸溶液的分光光度指数也表明,与PL相比,PLB对腐殖酸碳的结构耐久性和较低的迁移率具有更好的影响。PL和PLB的施用显着增加了土壤中非水解碳的含量,表明腐殖质化合物的稳定性更高,同时,CO 2排放量更低。发现向土壤中添加有机材料显着增加了土壤有机碳含量。我们的研究表明,在使用PLB后,识别土壤腐殖质的定量和定性组成中可能发生的变化,可能有助于确定适当的生物炭剂量。

更新日期:2020-09-25
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