杨树人工林沼液和生物炭混施对表层土壤活性有机碳的影响

葛之葳; 张玲; 卜丹蓉; 赵倩; 阮宏华; 曹国华

doi:10.3969/j.issn.1000-2006.2016.06.002

葛之葳,张玲,卜丹蓉,赵倩,阮宏华,曹国华

南京林业大学学报（自然科学版） ›› 2016, Vol. 40 ›› Issue (06) : 9-14.

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南京林业大学学报（自然科学版） ›› 2016, Vol. 40 ›› Issue (06) : 9-14. DOI: 10.3969/j.issn.1000-2006.2016.06.002

专题报道

杨树人工林沼液和生物炭混施对表层土壤活性有机碳的影响

葛之葳¹,张玲¹,卜丹蓉¹,赵倩¹,阮宏华^1*,曹国华²

作者信息 +

Effects of biogas slurry and biochar application on active organic carbon in the topsoil of poplar plantation

GE Zhiwei¹, ZHANG Ling¹, BU Danrong¹, ZHAO Qian¹, RUAN Honghua^1*, CAO Guohua²

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摘要

人工林施肥是一种重要的经营管理措施,而近年来沼液的处理与生物炭肥的使用也引起了人们广泛关注。在苏北杨树人工林集中分布区开展了沼液(施用量为0、125、250、375 m³/hm²)和生物炭(施用量为0、40、80、120 t/hm²)交互肥效实验,结果表明:①在所有沼液施肥水平中,生物炭的施用增加了表层土壤的活性有机碳,并提高了土壤微生物生物量碳氮比,使得微生物群落向真菌主导类型发展; ②在所有沼液施肥水平中,生物炭的添加显著提高了表层土壤(0～10 cm)的pH,促进了土壤的氮矿化和硝化作用; ③沼液和生物炭对土壤活性有机碳和pH具有显著的交互效应。因此,沼液和生物炭混施能进一步促进土壤活性有机碳的含量,改良土壤肥力,提高人工林生态系统生产力。

Abstract

Fertilization is an important measure in the management of plantation, and the disposal of biogas slurry and application of biochar attracted widespread attention recently. Interactive fertilizer efficiency experiment was carried out in the poplar plantation in northern Jiangsu. The content of nitrate & ammonium nitrogen in the concentration of biogas slurry were 0, 125, 250, 375 m³/hm² and biochar were 0, 40, 80, 120 t/hm². The results showed that: ① application of biochar improved topsoil(0-10 cm)pH and promoted the nitrogen mineralization and nitrification in all concentrations of biogas slurry addition; ② Application of biochar could increase soil active organic carbon, dissolved organic nitrogen and soil microbial biomass carbon and nitrogen ratios, which indicated that the microbial community had shift to fungi dominated; ③ Significant interactive effects on soil active organic carbon and pH were observed between the applications of biogas slurry and biochar. Therefore mixed fertilizer of biogas slurry and biochar could promote the content of soil active organic carbon, improve soil fertility and enhance the productivity of plantation ecosystem.

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葛之葳,张玲,卜丹蓉,赵倩,阮宏华,曹国华. 杨树人工林沼液和生物炭混施对表层土壤活性有机碳的影响[J]. 南京林业大学学报（自然科学版）. 2016, 40(06): 9-14 https://doi.org/10.3969/j.issn.1000-2006.2016.06.002

GE Zhiwei, ZHANG Ling, BU Danrong, ZHAO Qian, RUAN Honghua, CAO Guohua. Effects of biogas slurry and biochar application on active organic carbon in the topsoil of poplar plantation[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2016, 40(06): 9-14 https://doi.org/10.3969/j.issn.1000-2006.2016.06.002

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基金

基金项目:国家重点基础研究发展计划项目(2012CB416904); 江苏省基础研究计划(自然科学基金)青年基金项目(BK20130973); 江苏省高校优势学科建设工程资助项目(PAPD)
第一作者:葛之葳(nerrynor@163.com),讲师。
*通信作者:阮宏华(hhruan@njfu.edu.cn),教授。
引文格式:葛之葳,张玲,卜丹蓉,等. 杨树人工林沼液和生物炭混施对表层土壤活性有机碳的影响[J]. 南京林业大学学报(自然科学版),2016,40(6):9-14.