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首页> 外文期刊>Journal of soil science and plant nutrition >Effects of biochar application on nitrogen leaching, ammonia volatilization and nitrogen use efficiency in two distinct soils
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Effects of biochar application on nitrogen leaching, ammonia volatilization and nitrogen use efficiency in two distinct soils

机译：生物炭施用对两种不同土壤氮素淋失，氨挥发和氮利用效率的影响

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This study was conducted to determine the effect of biochar application on nitrogen (N) leaching, ammonia (NH3) volatilization, and fertilizer N use efficiency (NUE) in two soils with different properties (loamy and sandy). Ryegrass (Lolium perenne L.) incubation experiments (with 15N-enriched urea applied) and an N loss simulation study were conducted at biochar application rates of 2% and 4%. The results showed that 15N utilization increasedby 8.83-9.06% following the addition of biochar to sandy soil during the first season compared with the control. However, this significant effect was not observed in the loamy soil, in which significantly more urea-N was retained in the soil following biochar application. Furthermore, based on the results of the N leaching and NH3 volatilization experiments, 29.19% and 28.65% NO3-N leaching reductions were induced by 2% and 4% biochar amendments in loamy soil, decreasing the total inorganic N that was leached (NH4+-N plus NO3-N) by 26.46% and 26.82%, respectively. However, although the amount of leached NH4+-N decreased in biochar-amended sandy soil, the cumulative NH3 volatilizations were 14.18-20.05% higher than in the control, and 22.55% more NO3--N was leached from biochar-amended sandy soil, resulting in a negative effect on N retention. According to this study, biochar can be effectively used to improve the NUE in sandy soil and reduce N loss from loamy soil.
机译：进行了这项研究，以确定在两种具有不同特性（壤土和沙质）的土壤中，生物炭施用对氮（N）淋失，氨（NH3）挥发和肥料氮利用效率（NUE）的影响。以2％和4％的生物炭施用率进行了黑麦草（Lolium perenne L.）孵育实验（应用了富含15N的尿素）和氮损失模拟研究。结果表明，与对照相比，在第一季向沙质土壤中添加生物炭后15N利用率提高了8.83-9.06％。但是，在肥沃的土壤中未观察到这种显着影响，在施用生物炭后，土壤中明显保留了更多的尿素-N。此外，根据氮淋失和NH3挥发实验的结果，在壤土中2％和4％的生物炭改良剂可引起29.19％和28.65％的NO3-N淋失减少，从而减少了淋溶的总无机氮（NH4 +- N + NO3-N）分别增加26.46％和26.82％。但是，尽管生物炭改良过的砂质土壤中淋溶的NH4 + -N数量减少，但累积的NH3挥发量比对照中高14.18-20.05％，而生物炭改良过的砂质土壤中淋滤出的NO3--N多出22.55％，导致对氮保留的负面影响。根据这项研究，生物炭可以有效地用于改善沙质土壤中的NUE并减少壤土中的氮损失。

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