Acta Agriculturae Boreali-Sinica ›› 2022, Vol. 37 ›› Issue (S1): 207-213. doi: 10.7668/hbnxb.20193462

Special Issue: Soil fertilizer

• Resources & Environment · Plant Protection • Previous Articles     Next Articles

Carbon Sequestration Characteristic and Its Yield Effect of Fluvo-aquic Soil in Shandong under Long-term Fertilization

BO Luji1,2, LI Yan1, ZHANG Yingpeng1, ZHONG Ziwen1, SUN Ming1, LI Bing3, LIU Zhaohui1, SUN Cuiping4   

  1. 1 Institute of Agricultural Resources and Environment,Shandong Academy of Agricultural Sciences, Key Laboratory of Agro-Environment in Huang-Huai-Hai Plain,Ministry of Agriculture and Rural Affairs, Jinan 250100,China
    2 Institute of Modern Agriculture on Yellow River Delta,Shandong Academy of Agricultural Sciences,Dongying 257345,China
    3 No.801 Hydrogeology and Engineering Geology Brigade of Shandong Exploration Bureau of Geology and Mineral Resources,Jinan 250014,China
    4 Shandong Academy for Environmental Planning,Jinan 250102,China
  • Received:2022-07-25 Published:2022-12-28

Abstract:

To reveal the effects of long-term fertilization on carbon sequestration potential and crop yield of fluvo-aquic soil in Shandong Province,taking the winter wheat-summer maize rotation system as the research object,carbon sequestration characteristic and its yield effect of fluvo-aquic soil were explored by long-term fertilization of 28 a.The experiment adopted split-zone design.The main treatments included single inorganic fertilizer treatment and organic and inorganic fertilizer treatment.The treatments in the fertilizer area were CK,N,NP,NK,PK,NPK,N15PK,N25PK.The treatment in the organic fertilizer area was based on the treatment in the chemical fertilizer area,and the same amount of organic fertilizer was added respectively.The results showed that the cumulative carbon input and carbon sequestration rate of the organic fertilizer treatment were 2.47,4.29 times higher than those of the chemical fertilizer treatment,respectively.Soil organic carbon(SOC)storage in the organic fertilizer treatment was 155.6-193.2 t/ha,and the carbon sequestration rate was 0.25-2.18 t/(ha·a).SOC storage in the chemical fertilizer treatment was 39.5-100.5 t/ha,and the carbon sequestration rate was 4.15-5.49 t/(ha·a).Both the chemical fertilizer area and the organic fertilizer area had the highest carbon storage and the fastest carbon sequestration rate in the increment NPK treatment.SOC increased linearly with the input of exogenous accumulated carbon.The storage capacity of SOC was 18.4%-20.6% when the input amount of exogenous carbon was less than 120 t/ha.The storage capacity of SOC was 11.5% when the input amount was 120-200 t/ha.The soil carbon sequestration efficiency was 11.7% when the cumulative input of exogenous carbon was less than 100 t/ha.The soil carbon sequestration efficiency was 4.3% when the cumulative input of exogenous carbon was 100-200 t/ha.There was a very significant correlation between SOC content and wheat and maize yields.When soil organic carbon is increased by 1 g/kg in fluvo-aquic soil,the yield of wheat and maize can be increased by 208.4,184.8 kg/ha,respectively,and the total crop yield can be increased by 414.5 kg/ha.It is recommended that the cumulative organic carbon input amount was 150 t/ha under the condition of ensuring soil fertility and crop yield.

Key words: Fluvo-aquic soil, Long-term fertilization, Organic carbon, Carbon sequestration efficiency, Yield effect

Cite this article

BO Luji, LI Yan, ZHANG Yingpeng, ZHONG Ziwen, SUN Ming, LI Bing, LIU Zhaohui, SUN Cuiping. Carbon Sequestration Characteristic and Its Yield Effect of Fluvo-aquic Soil in Shandong under Long-term Fertilization[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(S1): 207-213. doi: 10.7668/hbnxb.20193462.

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