张宝林, 丁园. 不同配比的生物炭和石灰石对庐山云雾茶园土壤的改良[J]. 南昌航空大学学报(自然科学版), 2017, 31(1): 99-103. DOI: 10.3969/j.issn.1001-4926.2017.01.016
引用本文: 张宝林, 丁园. 不同配比的生物炭和石灰石对庐山云雾茶园土壤的改良[J]. 南昌航空大学学报(自然科学版), 2017, 31(1): 99-103. DOI: 10.3969/j.issn.1001-4926.2017.01.016
ZHANG Bao-lin, DING Yuan. Combined Use of Biochar and Limestone to Ameliorate Soil Acidity in Lu Shan Mist Tea Garden Soil[J]. Journal of nanchang hangkong university(Natural science edition), 2017, 31(1): 99-103. DOI: 10.3969/j.issn.1001-4926.2017.01.016
Citation: ZHANG Bao-lin, DING Yuan. Combined Use of Biochar and Limestone to Ameliorate Soil Acidity in Lu Shan Mist Tea Garden Soil[J]. Journal of nanchang hangkong university(Natural science edition), 2017, 31(1): 99-103. DOI: 10.3969/j.issn.1001-4926.2017.01.016

不同配比的生物炭和石灰石对庐山云雾茶园土壤的改良

Combined Use of Biochar and Limestone to Ameliorate Soil Acidity in Lu Shan Mist Tea Garden Soil

  • 摘要: 本研究以庐山云雾茶园土壤为实验对象,通过室内恒温培养实验,研究施用生物炭、石灰石及其混合改良剂对土壤的改良作用。施用生物炭和生物炭+石灰石混合改良剂都能将土壤pH提高到优质茶园范围内,施用石灰石处理的土壤pH值超过茶树生长最适范围。施用生物炭和生物炭+石灰石混合改良剂对土壤养分的提高都有促进作用,2.5 g/kg生物炭+0.75 g/kg石灰石混合处理和5 g/kg生物炭+0.75 g/kg石灰石混合处理之间有显著差异,土壤的速效养分含量随着生物炭施加量的增大而增加。结果表明,添加5 g/kg生物炭+0.75 g/kg石灰石混合改良剂能取得最好的改良效果,改良后土壤pH从4.83增长到5.47,土壤有机质、速效磷、碱解氮和CEC分别提高49%、21%、21%、64%,综合增长指数由对照1提高至1.35。因此,在本实验条件下,施用5g/kg生物炭+0.75g/kg石灰石混合改良剂是庐山云雾茶茶园土壤最有效的改良方法。

     

    Abstract: Through the indoor thermostatic cultivation experiment, the paper studied the improvement of Lu Shan Mist tea garden soil the amelioration of biochar、limestone and its mixing ingredients. The results showed that biochar and biochar + limestone mixed modifier can increase the soil pH to the optimum range for high-quality tea garden, while limestone raised the soil pH too much so that it is out of the optimal range for tea tree growth. Biochar and biochar + limestone mixed modifier also have great effects on the accumulation of soil nutrients, and there is a significant difference between 2.5 g/kg biochar + 0.75 g/kg limestone mixed treatment and 5 g/kg biochar + 0.75 g/kg limestone mixed treatment. The contents of soil nutrients increased. with the increasing application of biochar. In all, applying 5g/kg biochar + 0.75g/kg limestone mix modifier can obtain the best improvement result with the comprehensive growth index increased from reference 1 to 1.35, of which the soil pH raised from 4.83 to 5.47,and soil organic matter, available phosphorus, alkaline hydrolysis nitrogen and CEC increasing by 49%,21%,21% and 64% respectively. Therefore, under this experimental condition, application of 5 g/kg biochar + 0.75 g/kg limestone mixed conditioner is the most effective method for improving Lu Shan mist tea garden soil.

     

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