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[1]ZHANG Haiou,CAO Tingting,YANG Chenxi.Analysis of Soil Particle Size Change and Corn Yield Sustainability in Soft Rock and Sand Compound Soil[J].Research of Soil and Water Conservation,2022,29(01):275-280.

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Analysis of Soil Particle Size Change and Corn Yield Sustainability in Soft Rock and Sand Compound Soil

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 01 Page number: 275-280 Column: Public date: 2022-02-20

Title:: Analysis of Soil Particle Size Change and Corn Yield Sustainability in Soft Rock and Sand Compound Soil

Author(s):: ZHANG Haiou^1,2,3,4, CAO Tingting^2,3,4, YANG Chenxi^2,3; (1.Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an 710075, China; 2.Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an 710021, China; 3.Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Natural Resources, Xi'an 710021, China; 4.Shaanxi Provincial Land Consolidation Engineering Technology Research Center, Xi'an 710021, China)

Keywords:: compound soil; silt; clay; migration law; yield sustainability

CLC:: S152.3⁺2; S518.4

DOI:: -

Abstract:: The technology of soft rock and sand compound soil has been widely used in the land remediation of Mu Us sandy land. However, exploring the suitable mixing ratio of soft rock and aeolian sandy soil that is suitable for the high and stable yield of the main local economic crops, and improving the agricultural adaptability of the compound soil needs further research. We used the field positioning test data from 2010 to 2018 to analyze the silt and clay contents and spatial migration rules of the compound soil at different proportions under the corn planting mode, and explore the sustainability and stability of corn yield. The results showed that:(1)with the development of the test, silt and clay of the compound soil in the 0—30 cm soil layer migrated to the lower soil, and the migration rate decreased in the order: 1:5>1:1> 1:2; the silt and clay contents in the lower soil layer increased, making the plough layer of the soil profile increase to the thickness of 30—40 cm;(2)corn yields were significantly different in 1:1, 1:2 and 1:5 compound soils; compared with the yields in 2010, the annual yields of corn increased by 43.9%, 105.9% and 58.5%, respectively, in 2018; moreover, the annual average yield of corn in 1:2 compound soil exceeded 15 000 kg/hm² for many years, which was equal to the yield of local high-yield fields;(3)the 1:2 compound soil had the best effect on increasing corn yield, with the maximum SYI value and the minimum CV value, the yield stability and sustainability were the best. Therefore, the 1:2 compound ratio was determined to be the most suitable for corn growth, which was in favor of corn growth and development and obtaining high yield.

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Last Update: 2022-02-20