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李峰,周方亮,黄雅楠,徐永昊,成莉娟,耿明建,黄丽.减施化肥下紫云英和秸秆还田对土壤养分及活性有机碳的影响[J].华中农业大学学报,2020,39(1):67-75
减施化肥下紫云英和秸秆还田对土壤养分及活性有机碳的影响
Effects of Chinese milk vetch and straw returning on soil nutrient and active organic carbon under reduced application of chemical fertilizer
  
DOI:
中文关键词:  紫云英  绿肥; 秸秆还田  化肥  土壤养分  活性有机碳; 水稻
英文关键词:Chinese milk vetch(Astragalussinicus L.)  green manure  straw returning to field  chemical fertilizer  soil nutrients  reactive organic carbon  paddy
基金项目:国家绿肥产业技术体系项目(CARS-22); 公益性行业(农业)科研专项(201503122)
作者单位E-mail
李峰 华中农业大学资源与环境学院/农业农村部长江中下游耕地保育重点实验室武汉 430070 826449854@qq.com 
周方亮 华中农业大学资源与环境学院/农业农村部长江中下游耕地保育重点实验室武汉 430070  
黄雅楠 华中农业大学资源与环境学院/农业农村部长江中下游耕地保育重点实验室武汉 430070  
徐永昊 华中农业大学资源与环境学院/农业农村部长江中下游耕地保育重点实验室武汉 430070  
成莉娟 华中农业大学资源与环境学院/农业农村部长江中下游耕地保育重点实验室武汉 430070  
耿明建 华中农业大学资源与环境学院/农业农村部长江中下游耕地保育重点实验室武汉 430070  
黄丽 华中农业大学资源与环境学院/农业农村部长江中下游耕地保育重点实验室武汉 430070 daisyh@mail.hzau.edu.cn 
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中文摘要:
      以湖北省武汉市紫云英、秸秆还田及不同化肥施用量的12个田间试验为基础,结合添加2%和4%紫云英的室内培养实验,研究紫云英种植还田(MV)、水稻秸秆还田(S)和化肥减施(40%~100%NPK)对水稻土表层土壤(0~20 cm)养分及活性有机碳的影响。结果表明:相比紫云英与秸秆不还田与不施肥的对照(CK)处理,紫云英、秸秆还田下施用40%~100%化肥均能有效提高土壤有机质、碱解氮、颗粒有机碳的含量,增幅分别为3.98%~46.49%、4.46%~35.88%、3.59%~35.77%;单独种植紫云英还田处理土壤的速效磷、速效钾含量降低,在配施秸秆、施用化肥后含量显著增加;土壤各养分含量在80%化肥施用量下最高。与不添加紫云英处理相比,添加2%和4%的紫云英处理均能有效提高土壤pH以及有机质、碱解氮、速效钾、颗粒有机碳的含量,增幅随着紫云英添加量的增加而升高。
英文摘要:
      Based on the 12 treatments of Chinese milk vetch (Astragalus sinicus L.)and straw returning under different levels of chemical fertilizer on field in Wuhan City,Hubei Province,combined with laboratory culture experiment of adding 2% and 4% Chinese milk vetch,the effects of Chinese milk vetch returning (MV),rice straw returning (S) and chemical fertilizer reduction (40%-100% NPK) on soil nutrient and active organic carbon in the surface layer (0-20 cm) of paddy soil were investigated. Compared with the control treatment of no MV,no S and non-fertilizing,the use of reduced chemical fertilizers with MV and S could effectively increase soil organic matter,alkali nitrogen and particulate organic carbon,which increased by 3.98%-46.49%,4.46%-35.88% and 3.59%-35.77%,respectively. The content of available phosphorus and potassium in the soil treated with MV only was significantly reduced,while it was significantly increased after S and chemical fertilizer treatments. The soil nutrient contents were the highest at treatment of 80% NPK. Adding 2% and 4% of Chinese milk vetch indoor culture could effectively improve the soil pH,organic matter,available nitrogen,available potassium and particulate organic carbon contents,and they were increased with the adding amount of Chinese milk vetch.
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