Responses of soil respiration and organic carbon to organic soil amendments in upland paddy

IF 1.4 Q4 SOIL SCIENCE

Soil Science Annual Pub Date : 2023-07-15 DOI:10.37501/soilsa/169655

N. Nurhidayati, Abdul Basit, Sama' Iradat Tito, Masyhuri Machfudz, A. Ansari

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Abstract

Carbon dioxide (CO 2 ) is a signi ﬁ cant greenhouse gas (GHG) accounting for 60% of the total green-house effect. Soil respiration is a measure of the CO 2 released from soil. Rice was the largest contributing plant commodity of total emission by 12%. In the event of growing threats of global warming due to GHG emissions, reducing CO 2 emission by sequestering C in the soil is of supreme concernment. Improved management practices can rebuild C stocks in agricultural soils and help mitigate CO 2 emissions. A ﬁ eld study to assess how organic soil amendments in ﬂ uence soil respiration, C-organic content, and soil properties was conducted in upland paddy ﬁ eld. Treatments were: chemical fertilizer (F1), combination of chemical fertilizer and cow dung manure (F2), chemical fertilizer and vermicompost (F3), chemical fertilizer and liquid vermicompost powder (F4), cow dung manure+biochar (F5), vermicompost+biochar (F6) and liquid vermicompost powder+biochar (F7). All treatments tested almost had the same pattern of respiration rates starting before the application of the organic soil amendment until three months after planting. The highest respiration rate was found at 1 month after planting. Soil amendment (F4 and F7) had the lowest soil respiration rates in some measurements. The highest organic C content at three months after planting was found in the F6 and F3 treatments. The most in ﬂ uential factor on the respiration rate are soil moisture content and soil temperature. The results demonstrate the viability of vermicompost either in combination with chemical fertilizers or alone for soil amendment to maintain organic soil carbon for short period of time (~ 3 months).

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旱地水稻土壤呼吸和有机碳对土壤有机改良剂的响应

二氧化碳(co2)是一种重要的温室气体(GHG)，占温室效应总量的60%。土壤呼吸是测量土壤释放的二氧化碳。水稻是贡献最大的植物商品，占总排放量的12%。在温室气体排放导致全球变暖的威胁日益严重的情况下，通过在土壤中固碳来减少二氧化碳的排放是最受关注的问题。改进的管理做法可以重建农业土壤中的碳储量，并有助于减少二氧化碳排放。在旱地水田进行了土壤有机改良剂对土壤呼吸、碳有机含量和土壤性质的影响研究。处理为:化肥(F1)、化肥与牛粪(F2)、化肥与蚯蚓堆肥(F3)、化肥与蚯蚓液体堆肥粉(F4)、牛粪+生物炭(F5)、蚯蚓堆肥+生物炭(F6)和蚯蚓液体堆肥粉+生物炭(F7)。从施用有机土壤改良剂前到种植后3个月，所有试验处理的呼吸速率模式几乎相同。种植后1个月呼吸速率最高。土壤改良剂(F4和F7)的土壤呼吸速率最低。种植后3个月有机碳含量以F6和F3处理最高。对呼吸速率影响最大的因子是土壤含水量和土壤温度。结果表明，蚯蚓堆肥在短时间(~ 3个月)内与化肥配合施用或单独施用均能维持土壤有机碳。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Soil Science Annual SOIL SCIENCE-

CiteScore

2.50

自引率

6.70%

发文量

审稿时长

29 weeks

期刊介绍： Soil Science Annual journal is a continuation of the “Roczniki Gleboznawcze” – the journal of the Polish Society of Soil Science first published in 1950. Soil Science Annual is a quarterly devoted to a broad spectrum of issues relating to the soil environment. From 2012, the journal is published in the open access system by the Sciendo (De Gruyter).