热解温度和时间对三种作物残体生物炭pH值及碳氮含量的影响

生态学杂志

热解温度和时间对三种作物残体生物炭pH值及碳氮含量的影响

张千丰^{1, 2},孟军³,刘居东¹,王光华^1**

(¹中国科学院黑土区农业生态重点实验室，中国科学院东北地理与农业生态研究所，哈尔滨 150081； ^2 中国科学院大学， 北京 100049； ³ 沈阳农业大学辽宁省生物炭工程技术研究中心，沈阳 110866)

出版日期:2013-09-10 发布日期:2013-09-10

Effects of pyrolysis temperature and duration time on pH, carbon and nitrogen contents of biochars produced from three crop residues.

ZHANG Qian-feng^1,2, MENG Jun³, LIU Ju-dong¹, WANG Guang-hua^1**

(¹Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China; ^2 University of Chinese Academy of Sciences, Beijing 100049, China; ^3Liaoning Biochar Engineering & Technology Research Center, Shenyang Agricultural University, Shenyang 110866, China)

Online:2013-09-10 Published:2013-09-10

摘要/Abstract

摘要：

生物炭的理化性质主要由基质材料和热解条件决定。本试验以玉米棒芯、大豆秸秆和水稻颖壳为生物质材料，以马弗炉为热解设备，研究热解温度（300、350、400、450、500和550 ℃）和热解时间（3、6和9 h）对生物炭产率、pH和碳氮含量的影响。结果表明：随着热解温度的升高和热解时间的增长，生物炭的产率随之降低，pH随之升高；玉米棒芯生物炭和大豆秸秆生物炭碳含量随着热解温度的升高和热解时间的延长增加，但水稻颖壳生物炭碳含量变化不大；随着热解温度的升高和热解时间的延长，玉米棒芯生物炭和水稻颖壳生物炭氮含量变化无规律，但大豆秸秆生物炭氮含量呈降低趋势。

关键词: 天敌多样性, 生物控制, 生境管理, 非农生境

Abstract:

The physical and chemical properties of biochar are mainly determined by matrix materials and pyrolysis conditions. Taking the corn cob, soybean stalk, and rice husk as test materials, and by using muffle furnace, this paper studied the effects of pyrolysis temperature (300, 400, 450, 500, and 550 ℃) and pyrolysis duration (3, 6, and 9 hours) on the biochar yield, its pH, and carbon and nitrogen contents. With the increase of pyrolysis temperature and duration, the biochar yield decreased, while the biochar pH increased. The carbon content of the biochar produced from corn cob and soybean stalk increased with the increase of pyrolysis temperature and duration, while that of the biochar produced from rice husk had less change. The nitrogen content of the biochar produced from soybean stalk decreased with the increase of pyrolysis temperature and duration, while that of the biochar produced from corn cob and rice husk had no regular change.

Key words: natural enemy diversity, habitat management., non-cropping habitat, biological control

张千丰1, 2,孟军3,刘居东1,王光华1**. 热解温度和时间对三种作物残体生物炭pH值及碳氮含量的影响[J]. 生态学杂志.

ZHANG Qian-feng1,2, MENG Jun3, LIU Ju-dong1, WANG Guang-hua1**. Effects of pyrolysis temperature and duration time on pH, carbon and nitrogen contents of biochars produced from three crop residues.[J]. cje.

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