Effects of Different Amendment Materials on Reclaimed Soil Structure and Organic Matter Content of Hollow Village in Loess Region

doi:10.13961/j.cnki.stbctb.2022.05.003

Home > Archive>Volume 42, Issue 5, 2022 >16-24. DOI:10.13961/j.cnki.stbctb.2022.05.003

Effects of Different Amendment Materials on Reclaimed Soil Structure and Organic Matter Content of Hollow Village in Loess Region
DOI:
                        10.13961/j.cnki.stbctb.2022.05.003
                    
Author:
                        Liu ZheLiu Zhe
Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xian, Shaanxi 710075, China;Key Laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Natural Resources, Xian, Shaanxi 710021, China;Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xian, Shaanxi 710021, China;Shaanxi Provincial Land Consolidation Engineering Technology Research Center, Xian, Shaanxi 710075, China
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Wang HuanyuanWang Huanyuan
Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xian, Shaanxi 710075, China;Key Laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Natural Resources, Xian, Shaanxi 710021, China;Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xian, Shaanxi 710021, China;Shaanxi Provincial Land Consolidation Engineering Technology Research Center, Xian, Shaanxi 710075, China
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Sun YingyingSun Yingying
Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xian, Shaanxi 710075, China;Key Laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Natural Resources, Xian, Shaanxi 710021, China;Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xian, Shaanxi 710021, China;Shaanxi Provincial Land Consolidation Engineering Technology Research Center, Xian, Shaanxi 710075, China
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Sun ZenghuiSun Zenghui
Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xian, Shaanxi 710075, China;Key Laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Natural Resources, Xian, Shaanxi 710021, China;Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xian, Shaanxi 710021, China;Shaanxi Provincial Land Consolidation Engineering Technology Research Center, Xian, Shaanxi 710075, China
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Zhang RuiqingZhang Ruiqing
Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xian, Shaanxi 710075, China;Key Laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Natural Resources, Xian, Shaanxi 710021, China;Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xian, Shaanxi 710021, China;Shaanxi Provincial Land Consolidation Engineering Technology Research Center, Xian, Shaanxi 710075, China
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Clc Number:S156.2;S158.5
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Abstract:

[Objective] The poor structure and low fertility of reclaimed soil of abandoned homesteads in hollow villages in the loess area were addressed in order to provide a theoretical basis for improving the quality of reclaimed soils. [Methods] The effects of six different treatments of modified materials on structural stability and soil organic matter (SOM) of a reclaimed soil were compared with a control (CK) treatment in a five-year field experiment. The modified materials treatments were maturing agent (TM), fly ash (TF), organic fertilizer (TO), maturing agent + fly ash (TMF), maturing agent + organic fertilizer (TMO), and fly ash + organic fertilizer (TFO). [Results] SOM content was significantly increased (compared with CK) after the application of the different modified materials that promoted the cementation and aggregation of water-stable microaggregates (<0.25 mm) into water-stable macroaggregates (>0.25 mm). The content of water-stable macroaggregates showed an increasing trend. In the 0—15 cm soil layer, the contents of water-stable macroaggregates under TM, TF, TO, TMF, TMO, and TFO were increased by 328.2%, 130.0%, 87.8%, 81.1%, 36.7%, and 12.2%, respectively, compared with CK. Moreover, the application of the TF, TO, TMF, TMO, and TFO treatments significantly increased the mean weight diameter (MWD) and geometric mean diameter (GMD) of soil aggregates, while the unstable-aggregate index (E_LT) and fractal dimension (D) were decreased (p<0.05). SOM content was significantly positively correlated with MWD, GMD, and >2 mm water-stable aggregates, and significantly negatively correlated with the E_LT, D, and water-stable microaggregates. In particular, reclaimed soil under TFO had the highest content of SOM and water-stable macroaggregates, and the best effect on improving soil structrual stability. [Conclusion] Using a combination of organic fertilizer and fly ash is an appropriate practice to improve reclaimed soil structure and fertility of abandoned homesteads in hollow villages in the loess region.

Key words:hollow village;homestead reclamation soil;modified materials;soil water-stability aggregate;aggregate stability;soil organic matter

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刘哲,王欢元,孙婴婴,孙增慧,张瑞庆.施用不同改良材料对黄土区空心村复垦土壤结构和有机质含量的影响[J].水土保持通报英文版,2022,42(5):16-24

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Received:January 26,2022
Revised:March 14,2022
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Online: November 22,2022
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