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Change of soil productivity in three different soils after long-term field fertilization treatments

机译：长期施肥后三种不同土壤的土壤生产力变化

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摘要

Soil productivity(SP) without external fertilization influence is an important indicator for the capacity of a soil to support crop yield.However,there have been difficulties in estimating values of SPs for soils after various long-term field treatments because the treatment without external fertilization is used but is depleted in soil nutrients,leading to erroneous estimation.The objectives of this study were to estimate the change of SP across different cropping seasons using pot experiments,and to evaluate the steady SP value(which is defined by the basal contribution of soil itself to crop yield) after various longterm fertilization treatments in soils at different geographical locations.The pot experiments were conducted in Jinxian of Jiangxi Province with paddy soil,Zhengzhou of Henan Province with fluvo-aquic soil,and Gongzhuling of Jilin Province with black soils,China.Soils were collected after long-term field fertilization treatments of no fertilizer(control;CK-F),chemical fertilizer(NPK-F),and combined chemical fertilizer with manure(NPKM-F).The soils received either no fertilizer(F0) or chemical fertilizer(F1) for 3-6 cropping seasons in pots,which include CK-P(control;no fertilizer from long-term field experiments for pot experiments),NPK-P(chemical fertilizer from long-term field experiments for pot experiments),and NPKM-P(combined chemical and organic fertilizers from long-term field experiments for pot experiments).The yield data were used to calculate SP values.The initial SP values were high,but decreased rapidly until a relatively steady SP was achieved at or after about three cropping seasons for paddy and fluvo-aquic soils.The steady SP values in the third cropping season from CK-P,NPK-P,and NPKM-P treatments were 37.7,44.1,and 50.0% in the paddy soil,34.2,38.1,and 50.0% in the fluvo-aquic soil,with the highest value observed in the NPKM-P treatment for all soils.However,further research is required in the black soils to incorporate more than three cropping seasons.The partial least squares path mode(PLS-PM) showed that total N(nitrogen) and C/N ratio(the ratio of soil organic carbon and total N) had positive effects on the steady SP for all three soils.These findings confirm the significance of the incorporation of manure for attaining high soil productivity.Regulation of the soil C/N ratio was the other main factor for steady SP through fertilization management.

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  • 来源
    《农业科学学报（英文版）》 |2020年第3期|848-858|共11页
  • 作者

    LIU Kai-lou; GAO Su-duan; MA Chang-bao; XUE Yan-dong; ZHANG Hui-min; HAN Tian-fu; HUANG Jing; ZHANG Shui-qing; GAO Hong-jun; ZHANG Lu; Asad SHAH; HUANG Shao-min; ZHU Ping;

  • 作者单位

    National Engineering Laboratory for Improving Quality of Arable Land/Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China;

    National Engineering and Technology Research Center for Red Soil Improvement/Jiangxi Institute of Red Soil Nanchang 331717 P.R.China;

    San Joaquin Valley Agricultural Sciences Center USDA Agricultural Research Service CA 93648?9757 USA;

    Cultivated Land Quality Monitoring and Protection Center Ministry of of Agriculture and Rural Affairs Beijing 100125 P.R.China;

    Institute of Plant Nutrition and Environmental Resources Science Henan Academy of Agricultural Sciences Zhengzhou 450002 P.R.China;

    Institute of Agricultural Resource and Environment Jilin Academy of Agricultural Sciences Changchun 130033 P.R.China;

  • 收录信息 中国科学引文数据库(CSCD);
  • 原文格式 PDF
  • 正文语种 eng
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