Progress of Research on the Effect of Straw Return on Soil Organic Carbon Pools and Its Fractions in Saline-alkali Soils

doi:10.7668/hbnxb.20194783

Abstract

Abstract:

Saline-alkali soils are an important reserve arable land resource in China,and are generally characterized by high inorganic salt content,lack of organic matter and low soil fertility,which seriously affects China's food security.Therefore,there is a need to improve the saline soil condition,enhance soil fertility,and provide a more reliable guarantee for China's food security.In China,straw is an important agricultural organic waste,the resource utilization of straw has become an important part of sustainable agricultural development.Among them,straw return to field has been widely promoted as a core measure.A large number of studies have shown that by returning straw to the field in a reasonable manner,the structure of soil can be effectively improved,the organic carbon content of soil can be increased,and the fertility of soil can be improved.At present,how straw resources can be efficiently utilized in saline-alkali soils so that the organic carbon of saline-alkuli soils can be improved is a major issue facing Chinese agriculture.Therefore,this paper summarizes the different ways and amounts of straw return to the field to investigate its effects on the organic carbon pool and components of saline-alkali soils.On this basis,the shortcomings of straw return technology are proposed and solutions are found.In practice,appropriate treatment measures are taken for further realizing the improvement of saline-alkali land by straw return to the field.In addition,conducting saline-alkali land research is not only an in-depth analysis of a specific soil environment,but also a complex systematic project involving the intersection of multiple disciplines.In this process,various factors,including but not limited to land management,hydrogeology,ecosystem,and agricultural economics,must be fully considered.Through such efforts,we will be able to gain a deeper understanding of the characteristics of saline-alkali soils and provide a scientific basis and technical support for the improvement and utilization of these valuable resources.

Key words: Straw return, Saline-alkali soil, Amount of straw return to the soil, Soil organic carbon, Soil aggregate

GAO Fang, HONG Yu, SUN Yan, MI Wenhai, CHEN Shuotong. Progress of Research on the Effect of Straw Return on Soil Organic Carbon Pools and Its Fractions in Saline-alkali Soils[J]. Acta Agriculturae Boreali-Sinica, 2024, 39(S1): 143-149. doi: 10.7668/hbnxb.20194783.

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