Acta Agriculturae Boreali-Sinica ›› 2022, Vol. 37 ›› Issue (3): 168-174. doi: 10.7668/hbnxb.20192856

Special Issue: Soil fertilizer

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

Effect of Long-term Different Fertilization Pattern on Soil Aggregate Composition and Organic Carbon Fractions in Yellow Clayey Paddy Soil

CHEN Chao1, MI Wenhai1,2, , JU Jing1, WU Lianghuan2, ZHAO Haitao1,   

  1. 1. College of Environmental Science and Engineering,Yangzhou University,Yangzhou 225009,China
    2. Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, Zhejiang University,Hangzhou 310058,China
  • Received:2022-03-02 Published:2022-06-30
  • Contact: MI Wenhai, ZHAO Haitao

Abstract:

In order to study the effects of different fertilization pattern on the soil aggregates composition,the contents of total organic carbon and its components,and to clarify the optimal fertilization pattern for improving soil fertility in yellow clayey paddy soil.Based on the long-term fertilization experiment in Jinqu Basin,four treatments were conducted,including no fertilizer,chemical fertilizer alone,chemical fertilizer combined with cattle manure and chemical fertilizer combined with straw.The results showed that chemical fertilizers plus cattle manure resulted in the highest percentage of >0.250 mm aggregate,increased by 7.1,11.0 percentage point compared to the chemical fertilizers alone in 0-15 cm and 15-30 cm,respectively.By contrast,there were no significant differences in the composition of aggregate between chemical fertilizers plus straw and chemical fertilizers alone.On the other hand,chemical fertilizers plus cattle manure showed significantly higher in soil total organic carbon content,particulate organic carbon content in the surface soil,increased by 18.7%,98.7%,respectively.The order of POC/SOC value in the surface soil was as follows:chemical fertilizer plus cattle manure > chemical fertilizer plus rice straw> chemical fertilizers alone ≈ no fertilizer.Compared with the single application of chemical fertilizers,the combined application of chemical fertilizers and cattle manure or straw increased the relative absorption peak intensity of 1 030 cm-1,indicating that the relative content of polysaccharides was higher under the combined application of organic and inorganic fertilizers treatments.Overall,the combined application of chemical fertilizers and cattle manure was the best practice for improving soil structure and soil carbon pool.

Key words: Carbon pool management, Fourier transform infrared, Particulate organic carbon, Mineral organic carbon, Straw

Cite this article

CHEN Chao, MI Wenhai, JU Jing, WU Lianghuan, ZHAO Haitao. Effect of Long-term Different Fertilization Pattern on Soil Aggregate Composition and Organic Carbon Fractions in Yellow Clayey Paddy Soil[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(3): 168-174. doi: 10.7668/hbnxb.20192856.

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