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中国农学通报 ›› 2018, Vol. 34 ›› Issue (13): 113-118.doi: 10.11924/j.issn.1000-6850.casb18010009

所属专题: 生物技术

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

生物炭与有机肥施用对黄褐土土壤酶活性及微生物碳氮的影响

张毅博,韩燕来.,吴名宇,乔丹丹,李慧   

  1. 河南农业大学资源与环境学院,河南农业大学资源与环境学院;河南省粮食作物协同创新中心,河南农业大学资源与环境学院,河南农业大学资源与环境学院,河南农业大学资源与环境学院
  • 收稿日期:2018-01-02 修回日期:2018-04-11 接受日期:2018-02-24 出版日期:2018-05-07 发布日期:2018-05-07
  • 通讯作者: 李慧
  • 基金资助:
    河南省高等学校重点科研项目“黄褐土秸秆还田条件下生物炭减氮增效技术研究”(17A210021);河南省科技攻关计划项目“保水剂与秸秆 配施提高沙质土壤麦玉轮作水氮利用效率关键技术研究”(172102110057);河南农业大学科研启动经费“秸秆不同处理方式对潮土团聚体特性的影 响”(30500593)。

Effect of Biochar and Organic Fertilizer on Soil Enzyme Activities and Microbial Carbon and Nitrogen in Yellow-cinnamon Soil

  • Received:2018-01-02 Revised:2018-04-11 Accepted:2018-02-24 Online:2018-05-07 Published:2018-05-07

摘要: 研究了生物炭与有机肥配施对土壤酶及其微生物生物量碳氮的影响,为黄褐土障碍因子改良及合理施肥提供参考。在等氮条件下设置了6 个施肥处理:不施肥(CK)、单施生物炭(B)、氮磷钾配合施用(NPK)、氮磷钾+生物炭(NPK+B)、氮磷钾+有机肥(NPK+M)、氮磷钾+有机肥+生物炭(NPK+B+M)。采用氯仿熏蒸-K2SO4浸提法和化学分析法分别对土壤微生物量碳氮、酶活性和土壤化学性质和作物产量进行测定分析。结果表明:在黄褐土条件下,生物炭与有机肥处理均能显著提高土壤脲酶活性和土壤微生物生物量碳、氮含量,其中以NPK+M+B处理效果最好。有机肥能够促进β-葡萄糖苷酶酶活性,而生物炭与其作用相反。土壤微生物量碳氮、脲酶和β-葡萄糖苷酶与产量之间存在显著或极显著正相关关系。本试验条件下,生物炭与有机肥的添加能够提高土壤酶活性,提高土壤有机碳和全氮含量,以NPK+B+M处理对酶活性提升效果最好。

关键词: CMV, CMV, LMoV, RNAi, 植物表达载体, 农杆菌转化

Abstract: The combination effects of biochar and organic fertilizer on soil enzyme activities, microbial biomass carbon and nitrogen were studied to reduce the barriers of roductivity and establish a reasonable fertilization system on yellow-cinnamon soil. Under the condition of equal nitrogen, filed experiments were designed as: no fertilizer (CK), biochar (B), NPK fertilizers (NPK), biochar + NPK fertilizers (NPK+B), organic fertilizer + NPK fertilizers (NPK+M), biochar + organic fertilizer + NPK fertilizers (NPK+B+M). The soil enzyme activities, the microbial biomass carbon (MBC), the microbial biomass nitrogen (MBN) and some properties of soil, yield of wheat were measured by chloroform fumigation- K2SO4 lixiviating method and conventional analysis, respectively. The results showed that both biochar and organic fertilizer increased soil urease activity and enhanced microbial biomass carbon and nitrogen. The treatment NPK+M+B was the best of the all. Organic fertilizer improved β-glucosidase activity while biochar inhibited β-glucosidase activity. The MBC, MBN, soil urease activity and β- glucosidase activity were positively related to the yield significantly. The chemical fertilizer application combined with biochar and organic fertilizer is an optimal way to improve soil enzyme activities in the research.