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Journal of Henan Agricultural University.
(Accepted Version) Online First Publishing Date: 2023-04-27 08:39:23

Effects of biochar based fertilizer on soil nutrients and bacterial community structure under nitrogen reductionChinese Full TextEnglish Full Text (MT)

WU Dong;LI Maosen;LI Shuaibing;DONG Xianchun;MOU Yi;WANG Bo;TANG Tingting;TANG Yun;HE Yingyu;REN Tianbao;

Abstract: 【Objective】To investigate the effects of biochar based fertilizers on soil nutrients， bacterial diversity， and community in tobacco planting under nitrogen reduction conditions. 【Method】Four experimental treatments， namely control （CK）， conventional fertilization with 10% N reduction +0.6 t·hm-2 biochar fertilizer （T1）， 0.9 t·hm-2 biochar fertilizer （T2） and 1.2 t·hm-2 biochar fertilizer （T3）， were used to study the changes of soil main nutrients and rhizosphere bacterial community structure and abundance. 【Result】The application of biochar based fertilizer significantly promoted the growth of tobacco plants， with T2 treatment showing the most significant improvement in the agronomic traits of tobacco plants; The content of soil organic matter and available nutrients in each treatment significantly increased compared to CK treatment， with T2 treatment showing a 27.63% increase in soil organic matter content compared to CK treatment; The soil volume mass of T3 treatment decreased by 16.46% compared to CK. The application of biochar based fertilizer had a significant impact on the composition of soil bacterial community， increased the relative abundance of Proteobacteria， decreased the relative abundance of Acidobacteria， significantly increased the relative abundance of Fibromycetes and Actinomyces， and decreased the relative abundance of Bacteroides. Correlation analysis showed that Chloroflexi was greatly affected by soil physical and chemical properties， and was significantly related to soil physical and chemical indicators.【Conclusion】Biochar-based fertilizer can significantly ameliorate soil nutrient accumulation under nitrogen reduction conditions， ensure nutrient demand at the maturity stage of tobacco plants， improve soil functional bacterial community structure.
Keywords：

biochar-based fertilizer; tobacco-planting soil; physicochemical properties; bacteria; community structure;

  • DOI：

    10.16445/j.cnki.1000-2340.20230426.001

  • Series：

    (A) Mathematics/ Physics/ Mechanics/ Astronomy; (D) Agriculture

  • Subject：

    Biology; Fundamental Science of Agriculture; Fundamental Science of Agriculture; Agronomy; Agronomy

  • Classification Code：

    S158;S154.3

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