华北农学报 ›› 2024, Vol. 39 ›› Issue (6): 145-153. doi: 10.7668/hbnxb.20195002

所属专题: 番茄 土壤肥料 蔬菜专题

• 资源环境·植物保护 • 上一篇    下一篇

硅改性生物炭对酸性土壤化学特性、碳硅组分及番茄生长的影响

汪胜1,2,3, 罗梦1,2,3, 张田田4, 李思聪1,2,3, 蔡昆争1,2,3   

  1. 1 华南农业大学 资源环境学院,广东 广州 510642
    2 华南农业大学 农业农村部华南热带农业环境重点实验室,广东 广州 510642
    3 华南农业大学 广东省生态循环农业重点实验室,广东 广州 510642
    4 华南农业大学 园艺学院,广东 广州 510642
  • 收稿日期:2024-03-20 出版日期:2024-12-28
  • 通讯作者:
    蔡昆争(1970—),男,云南曲靖人,教授,博士,主要从事农业生态与作物逆境生理生态研究。
  • 作者简介:

    汪 胜(1997—),男,湖南益阳人,在读硕士,主要从事农业生态与土壤健康研究。

  • 基金资助:
    国家自然科学基金项目(31870420); 广东省科技计划项目(2121A0505030057)

The Impacts of Si-modified Biochar on Soil Chemical Properties, Carbon-silicon Fractions and Tomato Growth in Acidic Soil

WANG Sheng1,2,3, LUO Meng1,2,3, ZHANG Tiantian4, LI Sicong1,2,3, CAI Kunzheng1,2,3   

  1. 1 College of Natural Resources Environment,South China Agricultural University,Guangzhou 510642,China
    2 South China Agricultural University,South China Tropical Agriculture Environment Key Laboratory of the Ministry of Agriculture and Rural Affairs,Guangzhou 510642,China
    3 South China Agricultural University,Guangdong Provincial Key Laboratory of Ecological Recycling Agriculture,Guangzhou 510642, China
    4 College of Horticulture,South China Agricultural University,Guangzhou 510642
  • Received:2024-03-20 Published:2024-12-28

摘要:

为了探究硅改性生物炭(MSC)对酸性土壤化学特性、有机碳组分、硅化学形态及有效性和番茄生长的影响,以入侵植物为原料制备生物炭,研究硅改性生物炭对酸性土壤碳、硅化学形态转化及有效性的影响,评估其对番茄植株生长、土壤酶活性的影响。结果表明,硅改性生物炭显著提升土壤pH值、CEC(阳离子交换量)、EC(电导率)、速效磷和速效钾含量,同时提高土壤水溶性钠和铁的含量,以及增强过氧化氢酶和蔗糖酶的活性,从而提高土壤质量。生物炭改性与未改性均显著增加土壤碳不同组分的含量;与未改性生物炭相比,硅改性生物炭显著增加土壤微生物生物量碳(21.9%)和水溶性有机碳(898.3%)的含量。硅改性生物炭增加土壤有效硅、水溶性硅、游离态硅、活性硅、铁锰结合态硅和无定形硅含量,增幅分别为362.6%,158.9%,18.1%,34.9%,193.8%,74.1%。与此同时,生物炭处理促进番茄植株生长和硅素养分吸收,其中改性生物炭效果更为明显,植株干物质积累、硅含量与吸收量分别增加82.0%,98.9%,261.5%。综上所述,硅改性生物炭显著影响土壤的碳、硅化学形态及转化,增加土壤的有效性和酶活性,从而促进了作物的养分吸收和生长,显示出其在农业生产中具有良好的应用潜力。

关键词: 番茄, 硅, 改性生物炭, 酸性土壤, 土壤理化性状

Abstract:

This study systematically investigates the effects of silicon-modified biochar (MSC) on the chemical properties of acidic soil,organic carbon and silicon fractions,and the growth of tomato plants.Silicon-modified biochar was prepared,with a focus on investigating its impacts on carbon and silicon chemical fractions,and the availability in acidic soils;tomato growth and soil microbial activity were also evaluated.The results showed that silicon-modified biochar significantly increased soil pH,cation exchange capacity,electrical conductivity,available phosphorus and potassium.MSC also raised the levels of water-soluble sodium and iron in the soil and enhanced the activities of hydrogen peroxidase and sucrase enzymes,thereby improving soil quality.Both biochar modification and unmodified biochar significantly increased the content of different carbon fractions in the soil.Compared with unmodified biochar,silicon-modified biochar significantly increased soil microbial biomass carbon(21.9%) and water-soluble organic carbon (898.3%).Furthermore,silicon-modified biochar significantly increased the contents of soil available silicon,water-soluble silicon,free silicon,active silicon,iron-manganese-bound silicon and amorphous silicon by 362.6%,158.9%,18.1%,34.9%,193.8%,and 74.1%,respectively.Meanwhile,the application of biochar promoted the growth of tomato plants and the absorption of silicon nutrients,with modified biochar showing more pronounced effects.The accumulation of plant dry matter,silicon content,and absorption rate increased by 82.0%,98.9%,and 261.5%,respectively.In summary,silicon-modified biochar significantly affected the carbon and silicon chemical forms and transformation in the soil,increased soil effectiveness and enzyme activity,thereby promoting nutrient absorption and growth of crops,demonstrating its good potential application in agricultural production.

Key words: Tomato, Silicon, Modified biochar, Acid soil, Soil physicochemical trait

引用本文

汪胜, 罗梦, 张田田, 李思聪, 蔡昆争. 硅改性生物炭对酸性土壤化学特性、碳硅组分及番茄生长的影响[J]. 华北农学报, 2024, 39(6): 145-153. doi: 10.7668/hbnxb.20195002.

WANG Sheng, LUO Meng, ZHANG Tiantian, LI Sicong, CAI Kunzheng. The Impacts of Si-modified Biochar on Soil Chemical Properties, Carbon-silicon Fractions and Tomato Growth in Acidic Soil[J]. Acta Agriculturae Boreali-Sinica, 2024, 39(6): 145-153. doi: 10.7668/hbnxb.20195002.