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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (7): 95-101.doi: 10.11924/j.issn.1000-6850.casb2022-0252

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Mechanism and Technology of Soil Fertility Cultivation in Loess Desert: A Review

ZHU Xiaoyue1(), FANG Yan2, SHANGGUAN Zhouping2()   

  1. 1 College of Forestry, Northwest A & F University, Xianyang, Shaanxi 712100
    2 State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Xianyang, Shaanxi 712100
  • Received:2022-03-30 Revised:2022-06-08 Online:2023-03-05 Published:2023-03-15

Abstract:

The fragile ecological environment and soil erosion in loess desert area seriously affect the regional ecological protection and high-quality development. According to the characteristics of sandy land with low soil fertility, and poor agricultural and ecological utilization potential, Chinese scholars have carried out a lot of study and taken a series of measures to improve the structure and chemical properties of aeolian sandy soil. After decades of comprehensive management, the structure and fertility of aeolian sandy soil have been improved effectively. This study summarized the present situation of aeolian sandy soil improved by arsenic sandstone, coal fly ash, organic fertilizer, green manure and mulching, and discussed the action mechanism and effects of the soil improving technologies. It is considered that the technologies of soil improvement should be optimized and combined with different agronomic measures. The soil physicochemical property should be improved along with biological property of sandy land, to realize rapid and effective fertility cultivation. It is necessary to strengthen the construction of green soil fertility cultivation technology system and the monitoring of ecological effect of the technologies, and develop environment-friendly fertilizers which could be popularized, thus providing technical support for soil fertility cultivation and ecological restoration in sandy land.

Key words: aeolian sandy soil, soil fertility cultivation, soil structure, action mechanism, ecological restoration