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首页> 外文期刊>Nutrient Cycling in Agroecosystems >Effect of long-term application of organic amendment on C storage in relation to global warming potential and biological activities in tropical flooded soil planted to rice
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Effect of long-term application of organic amendment on C storage in relation to global warming potential and biological activities in tropical flooded soil planted to rice

机译：长期施用有机改良剂对水稻种植的热带水淹土壤中碳储存与全球变暖潜势和生物活性的关系

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摘要

The impact of long term organic amendments on the functional microbial activities, soil carbon (C) storage in relation to greenhouse gas (GHG) emission from rice field was investigated in a tropical Aeric Endoaquept. The treatments included unamended control, farmyard manure (FYM), green manure (GM) (Sesbania aculeata), FYM+GM and rice straw (RS)+GM combination. Our results suggest that the FYM+GM treatment has increased the global warming potential (GWP) by 110% as well decreased the C efficiency ratio by 24% in comparison to control. On the other hand, under RS+GM treatment the soil organic C and total C contents were significantly higher to the tune of 34 and 53%, respectively. Our studies clearly reveal that the application of RS+GM at 1:1 [Nitrogen (N) basis] could probably be the best soil amendment to sequester the soil organic C. Such amendments may not only have practical application value but also lead to higher yield capacity and minimize emission of GHG under flooded tropical rice soil systems.
机译：在热带的Aeric Endoaquept中研究了长期有机改良剂对稻田功能微生物活性，土壤碳（C）储存与稻田温室气体（GHG）排放的关系的影响。处理包括未经修正的对照，农家肥（FYM），绿肥（GM）（Sesbania aculeata），FYM + GM和稻草（RS）+ GM组合。我们的结果表明，与对照相比，FYM + GM处理使全球变暖潜能（GWP）提高了110％，碳效率降低了24％。另一方面，在RS + GM处理下，土壤有机碳和总碳含量分别显着提高，分别达到34％和53％。我们的研究清楚地表明，以1：1 [氮（N）为基础]施用RS + GM可能是螯合土壤有机碳的最佳土壤改良剂。此类改良剂不仅具有实际应用价值，而且会带来更高的价值。淹没的热带稻田土壤系统下的产量和温室气体排放量降至最低。

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