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      2. 施用生物炭對紅壤中不同形態鉀含量及小白菜生長的影響
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        國家重點研發計劃專項(2017YFD0200803)


        Effect of biochar application on potassium content of different forms in red soil and the growth of pakchoi
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          摘要:

          為研究施用生物炭對南方紅壤不同形態鉀含量及小白菜生長的影響,采用盆栽試驗,設置0%C(CK)、1%C、2%C、4%C和正常施用鉀肥(K)5個處理,并土培種植“熱綠二號”小白菜。結果表明:與對照(CK)相比,土壤中水溶性鉀、交換性鉀、非交換性鉀的含量在施用生物炭后分別提高12.6%~51.8%、13.3%~43.5%、10.3%~26.1%。4%C處理相比施用正常水平鉀肥對各種形態鉀增加量最接近。土壤pH、速效磷、速效鉀和有機質含量顯著提高,其中pH增加0.06~0.25;同時,陽離子交換量、交換性鈣、鎂含量也顯著提高,而交換性鋁含量顯著降低,降幅達到87%~98%。此外,施用生物炭提高了小白菜的生物量、葉片數、株高和鮮質量等農藝性狀。

          Abstract:

          “Hot Green No. 2” pakchoi was pot-planted with five treatments including 0% C,1% C,2% C,4% C and normal application of potassium fertilizer to investigate the effects of biochar application on potassium content of different forms in red soil and the growth of pakchoi. Results showed that the effects of biochar on content of water-soluble potassium,exchangeable potassium and non-exchangeable potassium in red soil were increased by 12.6%-51.8%,13.3%-43.5% and 10.3%-26.1%,respectively,compared to the control. The effect of biochar on improving different forms of potassium between 4% C and normal potassium was the most similar. Biochar application increased soil pH value significantly by 0.06-0.25 units,as available phosphorus,available potassium and organic carbon in soil. Also the cation exchange capacity,exchangeable calcium and magnesium content increased significantly,while the exchangeable aluminum content decreased significantly with a decrease of 87%-98%. Biochar application could improve pakchoi growth performance as increasing the biomass,leaf number,plant height and fresh weight of pakchoi.

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        叢銘,張夢陽,夏浩,姜存倉.施用生物炭對紅壤中不同形態鉀含量及小白菜生長的影響[J].華中農業大學學報,2020,39(4):22-28

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        • 收稿日期:2019-12-11
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        • 在線發布日期: 2020-07-30
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