Effect of Biochar on Soil Properties, Soil Loss, and Cocoyam Yield on a Tropical Sandy Loam Alfisol.
Effect of Biochar on Soil Properties, Soil Loss, and Cocoyam Yield on a Tropical Sandy Loam Alfisol.
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DOI：
10.1155/2020/9391630
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发表时间：
2020-01-01
影响因子：
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通讯作者：
Ayeni, Jerry Femi
中科院分区：
文献类型：
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作者：
Adekiya, Aruna Olasekan;Agbede, Taiwo Michael;Ayeni, Jerry Femi
生物炭是一种可以提高作物生产力和土壤可持续性的农业土壤改良剂。因此，在尼日利亚西南部奥沃的沙壤土 Alfisol 上进行了为期两年的田间试验，以评估硬木生产的生物炭对土壤理化特性、侵蚀潜力和椰子产量的影响。该研究是一项为期两年（2017 年和 2018 年）、四种生物炭水平（0（对照）、10、20 和 30t ha-1）的 2*4 析因实验。治疗采用随机完整区组设计，重复三次。结果表明，这两年生物炭的施用显着提高了椰树产量以及土壤物理（土壤团聚体的堆积密度、孔隙度、含水量、平均重量直径（MWD）、分散比和入渗率）和化学（土壤有机质、pH、N、P、K、Ca、Mg和CEC）特性和抗侵蚀性。 0-30t ha-1 生物炭水平提高了土壤特性和可可产量。就土壤流失量而言，2018年与2017年相比，在修正样地中，2018年10、20和30t ha-1生物炭的土壤流失量分别减少了7.4、20和73.5%，而对照样地2018年与2017年相比土壤流失量增加了2.7%。因此，施用量为30t ha-1生物炭被认为适合严重退化的土壤，因为这种施用量可以有效提高椰树产量和土壤性质，并减少土壤流失。
Among agricultural soil amendment that can enhance crop productivity and soil sustainability is biochar. Hence, two-year field experiments were conducted on a sandy loam Alfisol at Owo, southwest Nigeria, to evaluate the effects of biochar produced from hardwood on soil physical and chemical characteristics, erosion potential, and cocoyam (Xanthosoma sagittifolium (L.) Schott) yield. The study was a 2*4 factorial experiment with two years (2017 and 2018) and four biochar levels (0 (control), 10, 20, and 30t ha-1). The treatments were laid out in a randomized complete block design with three replications. Results indicated that biochar application significantly in both years improved yield of cocoyam and soil physical (bulk density, porosity, moisture content, mean weight diameter (MWD) of soil aggregates, dispersion ratio, and infiltration rate) and chemical (soil organic matter, pH, N, P, K, Ca, Mg, and CEC) properties and erosion resistance. Soil characteristics and cocoyam yield improved with level of biochar from 0-30t ha-1. When 2018 is compared with 2017 in term of soil loss, in the amended plots, 2018 reduced soil loss by 7.4, 20, and 73.5%, respectively, for 10, 20, and 30t ha-1biochar, whereas there was an increase of 2.7% soil loss in the control plot in 2018 compared with 2017. Therefore, application rate of 30t ha-1 biochar is considered as suitable for severely degraded soil because this application rate efficiently improves cocoyam yield and soil properties and reduces soil loss.