三江平原草甸土不同种稻年限土壤理化性质演变特征
作者:
作者单位:

(1.黑龙江省农业科学院土壤肥料与资源环境研究所,黑龙江 哈尔滨 150086;2.黑龙江省土壤环境与植物营养重点实验室,黑龙江 哈尔滨 150086;3.黑龙江省农业科学院耕作栽培研究所,黑龙江 哈尔滨 150086;4.黑龙江省科学院微生物研究所,黑龙江 哈尔滨 150001;5.黑龙江八一农垦大学,黑龙江 大庆 163319)

作者简介:

王秋菊(1978-),女,黑龙江省依兰人,副研究员,博士,从事土壤改良研究。E-mail:bqjwang@126.com。

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基金项目:

基金项目:国家重点研发计划(2017YFD0300502-5)。


Evolution characteristics of soil physical and chemical properties of meadow soil in paddy fields of different years in Sanjiang plain
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Affiliation:

(1.Institute of SoilFertilizer and Environment Resources,Heilongjiang Academy of Agricultural Sciences,Harbin Heilongjiang150086;2.Key laboratory of Heilongjiang Soil Environment and PlantNutrient,Harbin Heilongjiang150086;3.Institute of TillageandCultivation,Heilongjiang Academy of Agricultural Sciences,Harbin Heilongjiang150086;4.Institute MicrobiologyHeilongjiang Academy of Scinces,Harbin Heilongjiang150001;5.Heilongjiang Bayi Agricultural University,DaqingHeilongjiang163319)

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    摘要:

    土壤质量是评价土壤好坏的重要指标,也是土壤管理判断准则。为明确三江平原草甸土旱田改为水田后,土壤质量随种稻时间延长的演变规律,以三江平原草甸土为调查对象,调查草甸土旱田改为水田后,不同种稻年限土壤物理、化学性质变化。结果表明:草甸土种稻后,耕层和心土层土壤有机碳含量随种稻年限增加呈增加趋势;还原物质总量在耕层、犁底层和心土层均呈增加趋势;耕层土壤中 Fe 2+和 Mn 2+在种稻 6~ 10年达到最高值,然后向下迁移,到 40年在心土层达最高值;土壤固相比率和总孔隙在种稻初期变化不规律,种稻 40年时,土壤固相比率在心土层增加,直径 <0.000 2 mm孔隙增加明显;随种稻年限增加,耕层 0.02~ 2 mm颗粒比率增加,<0.002 mm颗粒降低并向下淋溶至心土层,心土层 <0.002 mm颗粒比率增加;草甸土种稻后,部分土壤物理、化学性质变化具有水稻土发育的特征。

    Abstract:

    Soil quality is a significant indicator for soil qualityevaluation.Understanding the characteristics of soil qualitychange is the criterion for agricultural development and soil management.There is a lack of research on the changes of soilquality after the transformation of meadow soil dryland to paddyfield.This study takes the meadow soil of Sanjiang Plain asthe surveying object,and investigates the changes of soil physicochemical properties with the increase of rice growing agesafter the transformation of meadow soil dryland to paddyfield.The results indicated that after growing rice in the meadowsoil,the soil organic carbon content in the plough layer and the core soil increased with the increase of rice growingage.Thetotal amount of reducing species in each layer of soil increased with the increase of rice growingage.The Fe 2+and Mn2+content in the ploughed soil reached to the highest value in the 6~10 a,and then migrated downward,reaching to the highestvalue in the core soil at 40a.The soil solid phase ratio and total pores changed irregularly in the initial stage of ricegrowing,when the rice was grown for 40a,the soil solid phase ratio increased in the core soillayer,and the pore with the diameter of<0.000 2 mm obviouslyincreased.With the increase of the rice growingage,the ratio of 0.02~ 2 mm granules in theplough layerincreased,<0.002 mm granules decreased and leached down to the heart soillayer,and the ratio of <0.002 mmgranules in the core layerincreased.After the rice growing in the meadowsoil,some physicochemical property changes of soil have the characteristics of paddy soil development.

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王秋菊,宫秀杰,曹旭,焦峰,刘鑫,李婧阳,刘峰.三江平原草甸土不同种稻年限土壤理化性质演变特征[J].中国土壤与肥料,2020,(5):10-16.

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  • 收稿日期:2019-08-11
  • 最后修改日期:
  • 录用日期:2019-09-28
  • 在线发布日期: 2020-11-06