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首页> 外文期刊>Archives of Agronomy and Soil Science >Effects of organic wastes on labile organic carbon in semiarid soil under plastic mulched drip irrigation
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Effects of organic wastes on labile organic carbon in semiarid soil under plastic mulched drip irrigation

机译：塑料覆盖滴灌下半干旱不稳定有机碳的影响

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摘要

The objective of this work was to evaluate the variation in labile organic carbon fractions after the application of organic wastes (OWs) in semiarid soil under plastic mulched drip irrigation. The two-year experiment involved six treatments: chicken manure (CM), sheep manure (SM), mushroom residue (MR), maize straw (MS), fodder grass (FG), and tree leaves (TL), with an unamended soil (no OWs) as control. In 2015 and 2016, treatment with OWs led to increased levels of soil organic carbon (SOC), dissolved organic carbon, microbial biomass carbon, easily oxidized organic carbon, as well as higher carbon management indexes and yields and lower oxidation stability coefficients. Higher SOC contents (p <0.01) were achieved in both years for TL and MS compared to the other OWs. In particular, the SOC content in 2016 was higher (p <0.05) for TL than MS. Compared to the other OWs, the easily oxidized organic carbon levels and carbon management indexes in both years were higher (p <0.01) for CM, SM, and MS, whereas the oxidation stability coefficients were lower (p <0.01). In conclusion, among the studied treatments, the application of MS was the most effective for improving soil fertility and enhancing soil carbon sequestration.
机译：这项工作的目的是评估在塑料覆盖滴灌下的半干旱土壤中使用有机废物（OWS）后不稳定的有机碳级分的变化。两年的实验涉及六种治疗方法：鸡粪（cm），绵羊粪便（SM），蘑菇渣（MR），玉米秸秆（MS），饲料草（FG）和树叶（TL），具有未来的土壤（没有ows）作为控制。 2015年和2016年，用OWS治疗导致土壤有机碳（SOC），溶解的有机碳，微生物生物量碳，易氧化有机碳的水平增加，以及更高的碳管理指标和产量和低氧化稳定性系数。在与其他OWS相比，在TL和MS两者之间实现了更高的SOC内容（P <0.01）。特别是，TL的2016年SoC内容比MS更高（P <0.05）。与其他OWS相比，CM，SM和MS的易氧化有机碳水平和碳管理指标较高（P <0.01），而氧化稳定系数较低（P <0.01）。总之，在研究的治疗中，MS的应用是改善土壤肥力最有效的，提高土壤碳封存。

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