有机肥绿肥配施对水稻土有机碳组分和水稻产量的影响
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(1.河北工程大学,河北 邯郸 056038;2.河南省农业科学院植物营养与资源环境研究所,河南 郑州 450002;3.中国农业科学院农业资源与农业区划研究所,北京 100081)

作者简介:

刘小粉(1985-),女,河南上蔡县人,副教授,博士,主要研究方向为绿肥资源综合利用。E-mail:liuxiaofenok@126.com。

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基金项目:国家绿肥产业技术体系(CARS-22);河北省青年拔尖人才经费支持(2018-2020);河北省自然科学基金(D2016402029)。


Effect of applying organic fertilizer and green manure on organic carbon fractions and rice yield in a paddy soil
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Affiliation:

(1.Hebei University ofEngineering,Handan Hebei056038;2.Institute of Plant Nutrition and Resource Environment,Henan Academy of AgricultureSciences,Zhengzhou450002;3.Institute of Agricultural Resources and Regional Planning,Chinese Academy ofAgriculturalSciences,Beijing100081)

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    摘要:

    该研究以两年稻田定位试验为基础,设置有机肥(OF)、有机肥 +绿肥 2 000 kg·hm -2(OF+GM1)、有机肥 +绿肥 3 000 kg·hm -2(OF+GM2)和有机肥 +绿肥 4 000 kg·hm -2(OF+GM3)4个处理,探讨不同处理对土壤有机碳组分和水稻产量的影响。结果表明,与 OF处理相比,有机肥绿肥配施未提高土壤及团聚体有机碳含量,却显著提高水稻产量(OF

    Abstract:

    Based on the 2-year experiment,four fertilization treatments(organic fertilizer; organic fertilizer plus 2 000 kg·hm -2green manure; organic fertilizer plus 3 000 kg·hm -2green manure; organic fertilizer plus 4 000 kg·hm -2 greenmanure)were established to investigate their effects on soil organic carbon fractions and the rice yield. The results showed thatcompared with organic fertilizer alone(OF),no significant differences on soil and aggregate organic carbon concentrationswere seen under the three treatments with green manurereturn,while the rice yield was significantly increased. With aggregates of 0.25~2 mm divided into three fractions,it was found that the organic carbon concentration increasedwith the increase of their particle size. Compared withOF,green manure return significantly increased organic carbon concentrations within the 0.05~0.25 and < 0.05 mm fractions,which was probably caused by changes of the free lightfraction,demonstrated through the density floating experiment. Correlation analysis showed that the rice yield was positively correlated with organic carbon concentrations within the 0.25~ 2 mm aggregates and within the 0.05~ 0.25 mm fraction.Green manure return could indirectly affect the rice yield by increasing organic carbon concentration within the 0.05~ 0.25mm fraction. Therefore,during the clean production(organicproduction)ofrice,it is recommended to combine organic fertilizer with green manure to improve the rice yield and soil fertility and the application rates of green manure could be from3 000~ 4 000 kg·hm -2 accordingly.

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刘小粉,贺小思,易柏宁,刘春增,曹卫东.有机肥绿肥配施对水稻土有机碳组分和水稻产量的影响[J].中国土壤与肥料,2020,(5):147-151.

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  • 收稿日期:2020-01-27
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  • 录用日期:2020-03-27
  • 在线发布日期: 2020-11-06