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中国农学通报

中国农学通报 ›› 2018, Vol. 34 ›› Issue (12): 108-111.doi: 10.11924/j.issn.1000-6850.casb17030001

所属专题： 园艺

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

生物炭对强酸性茶园土壤酸度的改良效果研究

王义祥,叶菁,郑慧芬,李艳春   

  1. 福建省农业科学院农业生态研究所,福建省农业科学院农业生态研究所,福建省农业科学院农业生态研究所,福建省农业科学院农业生态研究所
  • 收稿日期:2017-03-01 修回日期:2018-04-03 接受日期:2017-04-25 出版日期:2018-05-03 发布日期:2018-05-03
  • 通讯作者: 王义祥
  • 基金资助:
    福建省科技计划项目(2017R1016-2)；中央级公益性科研院所基本科研业务费专项(2017hzs1J025)；福建省科技重大专项(2017NZ0001)。

Improvement Effect of Biochar on Soil Acidity in Strong Acidity Tea Garden

  • Received:2017-03-01 Revised:2018-04-03 Accepted:2017-04-25 Online:2018-05-03 Published:2018-05-03

摘要： 利用盆栽试验研究了施用石灰和不同用量生物炭对强酸性茶园土壤酸度的调控效果。结果表明：施用生物炭和石灰处理均可显著提高茶园土壤pH值。5~20 g/kg生物炭施用量处理土壤的pH值低于施用石灰处理，但当生物炭用量大于40 g/kg时土壤pH值显著高于石灰处理，说明在强酸性条件下，低用量生物炭处理在调节土壤pH值的效果不如石灰。施用生物炭处理土壤阳离子交换量比施用石灰处理提高了0.98%~8.67%，盐基饱和度提高0.85%~40.90%，土壤交换性钙、镁、钾和钠含量分别提高1.70%~11.36%、32.79%~80.52%、76.47%~1744.12%和4.93%~57.48%，说明施用生物黑炭比施用石灰可增强土壤对酸的缓冲性能。

关键词: 气候变暖, 气候变暖, 作物需水量, 山西省, 响应

Abstract: A pot experiment was conducted to study the effects of the application of lime and biochar on soil acidity in tea garden. The results showed that biochar and lime application could significantly increase soil pH in the tea garden. The pH values of the treatments with 5~20g/kg biochar application were lower than that of the treatment with liming application, but the pH of the treatment with 40 g/kg biochar application was significantly higher than that of the treatment with lime application, which indicated that low amount of biochar application for acid soil amelioration was not as well as lime treatment under strong acid condition. Soil cation exchange capacities of the treatments with different biochar application increased by 0.98%~8.67% than that of the lime application treatment, base saturation increased by 0.85%~40.90%, the contents of soil exchangeable calcium, magnesium, potassium and sodium increased by 1.70%~11.36%, 32.79%~80.52%, 76.47%~1744.12% and 4.93%~57.48%, respectively, which indicated that the biochar application was better to enhance soil acid buffer performance compared with lime application.