Department of Agroecosystems, Faculty of Agriculture and Technology, University of South Bohemia in Ceske Budejovice, Branišovská 1645/31A, 370 05, Ceske Budejovice, Czech Republic.
Department of Agroecosystems, Faculty of Agriculture and Technology, University of South Bohemia in Ceske Budejovice, Branišovská 1645/31A, 370 05, Ceske Budejovice, Czech Republic.
Plant Physiol Biochem. 2024 Oct;215:109053. doi: 10.1016/j.plaphy.2024.109053. Epub 2024 Aug 16.
Applying biochar has beneficial effects on regulating plant growth by providing water and nutrient availability for plants due to its physicochemical characteristics. Nevertheless, it is still unclear how soil and biochar interactions strengthen crop lodging resistance. The objective of the current study was to find out how soil physicochemical conditions and alterations in biochar affect lodging resistance and crop productivity in cereals. To do this, a meta-analysis was carried out using nine groups of effective variables including type of feedstock, pyrolysis temperature, application rate, soil pH, total nitrogen, available phosphorus, potassium, organic matter (OM), and soil texture. Results showed that straw-derived biochar caused the highest positive effect size in the dry weight of biomass (20.5%) and grain yield (19.9%). Also, the lowest lodging index was observed from straw (-8.3%) and wood-based (-5.6%) biochars. Besides, the high application rate of biochar results in the highest positive effect sizes of plant cellulose (8.1%) and lignin content (7.6%). Soils that contain >20 g kg OM, resulted in the highest positive effect size in dry biomass (27.9%), grain yield (30.2%), and plant height (4.7%). Also, fine-textured soil plays an important role in increasing polymers in the anatomical structure of plants. Overall, the strong connection between biochar and soil processes, particularly the availability of OM, could strengthen plants' ability to tolerate lodging stress and contribute to high nutrient efficiency in terms of crop output and cell wall thickening.
生物炭因其理化特性，可为植物提供水分和养分可用性，从而对植物生长具有有益的调节作用。然而，土壤和生物炭的相互作用如何增强作物抗倒伏能力仍不清楚。本研究的目的是了解土壤理化条件和生物炭的变化如何影响谷物的抗倒伏能力和作物生产力。为此，使用包括原料类型、热解温度、施用量、土壤 pH 值、全氮、有效磷、钾、有机质 (OM) 和土壤质地在内的 9 组有效变量进行了荟萃分析。结果表明，秸秆衍生生物炭对生物量干重（20.5%）和籽粒产量（19.9%）的正效应最大。此外，秸秆（-8.3%）和木质素基（-5.6%）生物炭的倒伏指数最低。此外，生物炭的高施用量导致植物纤维素（8.1%）和木质素含量（7.6%）的正效应最大。含有>20 g kg OM 的土壤对干生物量（27.9%）、籽粒产量（30.2%）和株高（4.7%）的正效应最大。此外，细质地土壤在增加植物解剖结构中的聚合物方面起着重要作用。总的来说，生物炭和土壤过程之间的紧密联系，特别是 OM 的可用性，可以增强植物耐受倒伏胁迫的能力，并有助于提高作物产量和细胞壁增厚方面的养分效率。
