生物炭对水稻种子萌发、早期生长及土壤养分的影响

Montasir Shamim, N. Saha, Farhana Bintay Hye
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引用次数: 10

摘要

生物炭在土壤中的应用已被公认为提高植物生产力,土壤性质以及长期碳储存。但是,在热带地区进行的与生物炭有关的研究很少。本研究是在孟加拉国Sylhet的Shahjalal科技大学林业与环境科学系苗圃进行的,旨在评估三种不同生物炭处理对水稻(Oryza sativa)萌发和早期生长的影响。作为生物炭生产原料的选择物种是Albizia saman (Raintree), Neolamarckia cadamba (Kadam)和Albizia richardiana (Chambul)。采用康提基窑生产生物炭。与对照一起施用两种处理,即每种生物炭各10吨和15吨。采用完全随机区组设计(CRBD)作为实验设计。数据分析采用Tukey HSD事后检验和方差分析。与对照相比,生物炭处理的发芽率没有显著提高(P < 0.05)。施用15 t / h的雨树生物炭显著(P < 0.05)增加了根长。在茎部干重方面,15 t、10 t施用量雨树和香蒲显著高于对照(P < 0.05)。加10 t炭处理的RWC显著高于对照(P < 0.05)。土壤化学试验表明,施用15 t / h Chambul生物炭的氮磷钾含量显著高于对照(P <0.001)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of biochar on seed germination, early growth of Oryza sativa L. and soil nutrients
Biochar application to soil has been recognized worldwide for enhancing plant productivity, soil properties as well as long term carbon storage. But very few studies related to biochar have been undertaken in the tropical region. This study has been undertaken in the nursery of Department of Forestry and Environmental Science, Shahjalal University of Science and Technology in Sylhet, Bangladesh to assess the impact of various treatments of three different biochar on germination and early growth of paddy (Oryza sativa). The selected species used as feedstock for biochar production are Albizia saman (Raintree), Neolamarckia cadamba (Kadam), and Albizia richardiana (Chambul). Biochar was produced by using Kon-Tiki kiln. Two treatments viz. 10 t ha and 15 t ha for each biochar were applied along with Control. Complete Randomized Block Design (CRBD) was followed as experimental design. Data were analyzed by using Tukey HSD post hoc test and ANOVA. In the case of germination percentage biochar treatments did not show significant (P < 0.05) increase compared to control. The 15 t ha application rate of Raintree biochar showed significant (P < 0.05) increase in root length compared to control. For shoot dry weight 15 t ha application rate of Raintree and 10 t ha application rate of Chambul showed significant (P < 0.05) increase than control. While 10 t ha of Kadam biochar showed significant (P < 0.05) increase in RWC than control. Soil chemical test showed that Chambul biochar’s 15 t ha application rate shows strongly significant (P <0.001) increase of NPK than control.
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