Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (4): 152-158. doi: 10.7668/hbnxb.20193745

Special Issue: Soil fertilizer Saline-alkali stress Hot Article

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

Effects of Long-term Application of Organic Fertilizer on Colloid Components and Organic-Mineral Composition of Soda Saline-alkali Soil

XU Lianzhou1, WANG Qi1, LIU Danyang1, ZHONG Rui1, MENG Qingfeng1, ZHANG Ruyue1, LIU Yang1, MA Xianfa1, LUO Jingmei1, XING Huaming2, SONG Bo1   

  1. 1 School of Resources and Environment,Northeast Agricultural University,Harbin 150030,China
    2 Heilongjiang Agricultural Products and Veterinary Medicine Feed Technology Appraisal Station,Harbin 150036,China
  • Received:2023-02-08 Published:2023-08-28

Abstract:

Based on the long-term improvement experiment of organic fertilizer of soda saline-alkali soil in Songnen Plain,the effects of different improvement years(4,11,15,20 a)on soil colloid components,soil organic carbon components and soil organic-mineral compound degree were studied with no improvement as the control(CK).The results showed that with the increase of improvement years,the colloidal content of soil water dispersive group(G0)decreased significantly(P<0.05),while that of soil calcium-binding complex(G1)increased significantly(P<0.05);there were no significant changes in colloid content of soil iron and aluminum oxide binding complex(G2)and(G0+G1+G2)content of different treatments;the organic carbon content in G0 group,G1 group and G2 group showed an increasing trend.Organic carbon content and heavy fraction organic carbon content of all organic fertilizer treatments were significantly increased compared with CK(P<0.05).In all treatments,organic carbon content in 4 a treatment was the highest,and heavy fraction organic carbon content in 11 a treatment was the highest.The total contribution rate of soil carbon sequestration of the treatments complexes with improved years of 11 a or more was 35.51%—54.64%.Compared with CK,organic-mineral compound degree of soda saline-alkali soil treated with organic fertilizer increased to varying degrees,and the increase was obvious in the treatment of 11 a and above.In conclusion,the long-term application of organic fertilizer promoted the transformation of water dispersive colloid of soda saline-alkali soil to water stable complex,significantly increased the contribution rate of the complex to soil carbon fixation,and significantly improved the degree of organic-mineral composition of the soil.

Key words: Soda saline-alkali soil, Organic fertilizer, Soil organic carbon, Soil colloid, Organic-mineral recombination

Cite this article

XU Lianzhou, WANG Qi, LIU Danyang, ZHONG Rui, MENG Qingfeng, ZHANG Ruyue, LIU Yang, MA Xianfa, LUO Jingmei, XING Huaming, SONG Bo. Effects of Long-term Application of Organic Fertilizer on Colloid Components and Organic-Mineral Composition of Soda Saline-alkali Soil[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(4): 152-158. doi: 10.7668/hbnxb.20193745.

share this article