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首页> 外文期刊>Communications in Soil Science and Plant Analysis >Low Pyrolysis Temperature Biochar Improves Growth and Nutrient Availability of Maize on Typic Calciargid
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Low Pyrolysis Temperature Biochar Improves Growth and Nutrient Availability of Maize on Typic Calciargid

机译：低热解温度生物炭改善了典型Ty蒲玉米的生长和玉米的养分利用率

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摘要

This experiment was conducted to investigate the effects of biochars, produced from maize straw at different temperatures (300, 400, and 500 degrees C), on growth of maize. Maximum cation exchange capacity (CEC) (106cmol(c) kg(1)) of biochar was observed at 400 degrees C. The pH, electrical conductivity (EC), and carbon content of biochars significantly increased with increasing temperature, and maximum pH (9.8), EC (3.0dS m(1)), and carbon content (607gkg(1)) were observed at 500 degrees C. Concentration of phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) significantly increased with increasing temperature, while of nitrogen (N) decreased. Ammonium bicarbonate-diethylene triamine penta acetic acid (AB-DTPA)-extractable nutrients were decreased with increasing pyrolysis temperature. Shoot and root dry matter of maize increased significantly with application of biochar produced at 300 and 400 degrees C and decreased significantly at 500 degrees C. Maximum shoot and root dry matter of maize was obtained at biochar produced at 300 degrees C. Phosphorus and K concentration in shoots and roots increased with biochar, and it was significantly more with fertilizer application. In contrast to P, shoot and root K concentration increased significantly with increasing pyrolysis temperature. The results of this study indicated that application of biochar produced at low pyrolysis temperature may be a practical approach to improve crop growth.
机译：进行该实验以研究在不同温度（300、400和500摄氏度）下由玉米秸秆生产的生物炭对玉米生长的影响。在400摄氏度下观察到生物炭的最大阳离子交换容量（CEC）（106cmol（c）kg（1））。随着温度的升高，生物炭的pH，电导率（EC）和碳含量显着增加，并且最大pH（ 9.8），EC（3.0dS m（1））和碳含量（607gkg（1））在500摄氏度下观察到。磷（P），钾（K），钙（Ca）和镁（Mg ）随温度升高而显着增加，而氮（N）则降低。碳酸氢铵-二亚乙基三胺五乙酸（AB-DTPA）提取的养分随热解温度的升高而降低。施用300和400℃的生物炭可以显着增加玉米的地上部和根部干物质，而在500℃时可以显着降低玉米的地上部和干部含量。300℃时产生的生物炭可获得最高的玉米地上部和根部干物质。生物炭增加了芽和根中的含量，而施肥则增加了很多。与磷相反，茎秆和根系钾的浓度随着热解温度的升高而显着增加。这项研究的结果表明，在低热解温度下生产生物炭的应用可能是提高作物生长的实用方法。

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