紫云英和秸秆还田对土壤肥力性状的影响
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(华中农业大学,农业农村部长江中下游耕地保育重点实验室,湖北 武汉 430070)

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李峰(1994-),男,江西赣州市人,硕士,主要从事土壤化学方面的研究。E-mail:826449854@qq.com。

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基金项目:国家绿肥产业技术体系(CARS-22);公益性行业(农业)科研专项经费项目(201503122)。


Effects of Chinese milk vetch and straw returning on soil fertility characters
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(Key Laboratory of ArableLand Conservation(Middle and Lower Reaches of Yangtze River),Ministry of Agriculture and Rural Affairs,HuazhongAgriculturalUniversity,Wuhan Hubei430070)

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    摘要:

    在湖北省荆州市绿肥长期定位试验的基础上,研究紫云英种植还田(MV)和水稻秸秆还田(S)对水稻土表层(0~ 20 cm)各形态养分、活性有机碳及氧化铁的影响。结果表明:与对照(CK)处理相比,紫云英还田能有效增加土壤有机质、碱解氮、颗粒有机碳的含量,增幅分别为 1.40%~ 13.11%、0.08%~ 12.24%、1.01%~ 12.56%;紫云英单独还田的处理土壤有效磷、速效钾含量较 CK处理降低,在施用化肥(NPK)及秸秆还田后明显增加;紫云英还田各处理土壤的非晶质铁、络合铁含量和铁的活化度较 CK处理增加(除部分处理外),增幅分别为 0.87%~12.30%、7.98%~30.88%、0.31%~11.66%,均表现为 S+MV+NPK处理的增幅最大。紫云英、秸秆还田均能有效提高土壤肥力水平,紫云英还田对土壤肥力水平的提升效果好于秸秆还田,两者配合还田效果最好。

    Abstract:

    Based on long-term green manure experiments in Jingzhou HubeiProvince,the composition characteristics ofnutrients,active organic carbon and iron oxide in the surface layer(0~20 cm)of paddy soil were studied under theconditions of Chinese milk vetch planting and returning(MV),and rice straw returning(S).The results showed thatcompared withcontrol(CK)treatment,Chinese milk vetch returning effectively increased the content of soil organicmatter,available nitrogen and particulate organiccarbon,which increased by 1.40%~13.11%,0.08%~12.24%,1.01%~12.56%,respectively.Soil available phosphorus and potassium contents in Chinese milk vetch returning alonetreatment were lower than those ofCK,but they increased significantly after applying chemicalfertilizer(NPK)and strawreturning.Except for sometreatments,the contents of amorphousiron,complex iron and the activation degree of iroNOxides in different treatments of Chinese milk vetch returning increased significantly compared withCK,with the increase of 0.87%~12.30%,7.98%~30.88%,0.31%~11.66%,respectively,and the largest increase showed in S+MV+NPKtreatment.Both Chinese milk vetch and straw returning could effectively improve soil fertilitylevel.The effect of Chinesemilk vetch returning on soil fertility was better than that of straw returning.The combination of Chinese milk vetch and straw returning had the best effect.

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李峰,周方亮,黄雅楠,徐永昊,耿明建,黄丽.紫云英和秸秆还田对土壤肥力性状的影响[J].中国土壤与肥料,2020,(3):75-81.

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  • 收稿日期:2019-05-10
  • 最后修改日期:
  • 录用日期:2019-06-07
  • 在线发布日期: 2020-07-13
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