酸化生物炭改良苏打盐碱土的效应  

Experimental Effects of Acidified Biochar on Saline-sodic

作　　者：鲁新蕊[1] 陈国双[1] 李秀军[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所,长春130012

出　　处：《沈阳农业大学学报》2017年第4期462-466,共5页Journal of Shenyang Agricultural University

基　　金：公益性行业(农业)科研专项项目(201303095-8);国家重点研发计划项目(2016YFC0501206)

摘　　要：生物炭是一种潜在的改良剂,被誉为"黑色黄金"。为明确生物炭改良苏打盐碱化土壤的效应,设置了田间定位试验,研究生物炭酸化改性后对苏打盐碱化土壤的容重、pH值、含水量、有机质、矿质氮和全氮及玉米产量的影响,探寻生物炭在改良苏打盐碱化土壤的应用价值和潜力。结果表明:苏打盐碱化土壤施用酸化生物炭后,改良效果明显,与没有经过改性生物炭相比,施用酸化处理的生物炭,容重降低0.3%~3.7%,pH值降低0.2~0.7个单位,有机质提高1.1%~2.5%,平均含水量提高0.8%,增加了土壤中全氮和矿物质氮的含量,使玉米产量提高5.1%~7.2%。苏打盐渍土施用2%(20g·kg-1)酸化生物炭时,苏打盐渍土改良效果最佳。Biochar praised as ＂black gold＂ is a promising soil ameliorant. A field experiment was conducted to investigate the soil bulk density, soil water, pH, EC, soil organic matter and so on, in order to clarify the amendment, the applicable value and potential of biochar on saline-sodic soil. Results indicated that the influences of biochar on ameliorating saline-sodic soil were clear. Comparing to biochar without additional treatment, soil bulk density decreased by 0.3%-3.7%, pH decreased 0.2-0.7 units, average soil water enhanced 0.8%, maize productivity increased by 5.1% -7.2%, soil organic matter increased 1.1% -2.5%, enhanced the total and mineral nitrogen after applying acidified biochar. And 2% （20 g ？ kg-1）acidified biochar showed the best ameliorating effects on saline-sodic soil.

关 键 词：生物炭 苏打盐碱土 改良 

分 类 号：S156.4[农业科学—土壤学]