Effect of NH<sub>4</sub><sup>+</sup>-N Adsorption-desorption by Tea Residue Biochar Prepared at Different Pyrolysis Temperatures in Tea Plantation Soil

doi:10.13870/j.cnki.stbcxb.2019.06.046

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Effect of NH₄⁺-N Adsorption-desorption by Tea Residue Biochar Prepared at Different Pyrolysis Temperatures in Tea Plantation Soil

更新时间：2025-03-12

- Effect of NH₄⁺-N Adsorption-desorption by Tea Residue Biochar Prepared at Different Pyrolysis Temperatures in Tea Plantation Soil
- Vol. 33, Issue 6, Pages: 326-331(2019)
- 作者机构：
  
  四川农业大学资源学院,成都,611130
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2019.06.046
  CLC：
- Published：2019
- 稿件说明：
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Effect of NH₄⁺-N Adsorption-desorption by Tea Residue Biochar Prepared at Different Pyrolysis Temperatures in Tea Plantation Soil[J]. 2019, 33(6): 326-331.
DOI：

Effect of NH₄⁺-N Adsorption-desorption by Tea Residue Biochar Prepared at Different Pyrolysis Temperatures in Tea Plantation Soil[J]. 2019, 33(6): 326-331. DOI： 10.13870/j.cnki.stbcxb.2019.06.046.

摘要

生物质炭对铵根的吸附解吸影响着土壤的固氮效果，为探讨茶渣生物质炭对茶园土吸附-解吸NH

-N性能的影响，减少土壤中氮素的淋失，提高氮素利用效率，通过模拟培养试验，采用平衡吸附法及HCL解吸法，研究了不同热解温度下制备的茶渣生物质炭在不同添加比例（0.35%，0.70%，1.40%，2.80%）下，茶园土对NH

-N吸附解吸的特性。结果表明：施用生物质炭能有效增强茶园土对NH

-N的吸附，并随生物质炭添加量的增加而增强。同一生物质炭添加量下，4种生物质炭处理下茶园土对NH

-N的吸附量大小表现为BC400

BC300

BC500

BC600。生物质炭的CEC含量是影响土壤吸附NH

-N能力的主要因素。土壤对NH

-N的吸附过程均以Langmuir方程拟合达到显著水平（0.953 7

0.995 5），以单层吸附为主。施用生物质炭后，土壤产生了解吸滞后，有效降低了茶园土对NH

-N的解吸率，BC400的解吸率最低。茶渣生物质炭能够增强土壤对NH

-N的吸附，降低对NH

-N的解吸，有利于提高土壤对氮素的吸持能力，其中BC400，2.80%处理下效果最佳。

Abstract

The adsorption and desorption of ammonium by biochar affects the nitrogen fixation effect of soil. To explore the effect of tea residue biochar on the adsorption-desorption of NH

-N in tea garden soil

reduce nitrogen leaching in soil

and improve nitrogen use efficiency

through a simulated culture experiment

the equilibrium adsorption method and HCL desorption method were used to study the ads

orption-desorption of NH

-N characteristics in tea garden soil in which the biochar that prepared at different pyrolysis temperatures was differently added (0.35%

0.70%

1.40%

2.80%). The results showed that the application of biochar could effectively enhance the adsorption of NH

-N by tea garden soil and the enhancement increase with the increase of biochar addition. Under the same addition

the adsorption amount of NH

-N in the tea garden soil treated by four kinds of biochar trended as BC400

BC300

BC500

BC600. The CEC content of biomass carbon was the main factor affecting the ability of soil to adsorb NH

-N. The adsorption process of NH

-N by soil

which was dominated by monolayer adsorption

reached a significant level by matching the Langmuir equation (0.953 7

0.995 5). After the application of biomass charcoal

the soil produced a known absorption hysteresis

which effectively reduced the desorption rate of NH

-N in tea garden soil

and the desorption rate of BC400 was the lowest. Tea residue biochar can enhance the adsorption of NH

-N in soil

reduce the desorption of NH

-N

improve the ability of soil to absorb nitrogen

and the treatment of BC400 with 2.80% addition showed the best effect.

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CHEN Jian-qiu1,2,CHEN Hong-kun2,ZHANG Min1,SUN De-fang2,CHEN Hai-ning1,WANG Li-ping2(1.College of Resources and Environment,Shandong Agricultural University,Chinese NationalEngineering Research Center for Slow/Controlled Release Fertilizer,State Key Laboratory of Crop Biology,Taian,Shandong 271018,2.Shandong Kingenta Ecological Engineering Co.,Ltd.,,)

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⁰

Effect of NH4+-N Adsorption-desorption by Tea Residue Biochar Prepared at Different Pyrolysis Temperatures in Tea Plantation Soil

DOI：10.13870/j.cnki.stbcxb.2019.06.046

摘要

Abstract

关键词

Keywords

references

Effect of NH₄⁺-N Adsorption-desorption by Tea Residue Biochar Prepared at Different Pyrolysis Temperatures in Tea Plantation Soil