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[1]ZHOU Jingchao,ZHANG Xizhou,ZHENG Zicheng,et al.Characteristics of Runoff and Phosphorus Loss from Sloping Farmland in Yellow Soil Region Under the Condition of Summer Maize Growth[J].Research of Soil and Water Conservation,2023,30(02):81-86.[doi:10.13869/j.cnki.rswc.2023.02.008]

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Characteristics of Runoff and Phosphorus Loss from Sloping Farmland in Yellow Soil Region Under the Condition of Summer Maize Growth

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 02 Page number: 81-86 Column: Public date: 2023-03-10

Title:: Characteristics of Runoff and Phosphorus Loss from Sloping Farmland in Yellow Soil Region Under the Condition of Summer Maize Growth

Author(s):: ZHOU Jingchao, ZHANG Xizhou, ZHENG Zicheng, LI Tingxuan; (College of Resouces, Sichuan Agricultural University, Chengdu 611130, China)

Keywords:: surface runoff; interflow; phosphorus loss; summer maize; tillage measures

CLC:: P333; S153.6

DOI:: 10.13869/j.cnki.rswc.2023.02.008

Abstract:: To reveal the regulation of runoff and phosphorus loss in sloping farmland of yellow soil under natural rainfall with the condition of summer maize growth, runoff plots set in the field were conducted to investigate the characteristics of surface runoff, interflow and total phosphorus loss under natural rainfall. The results showed that:(1)the runoff of downslope ridge planting was significantly higher than that of cross planting and flat planting, accounting for 1.13 and 1.17 times higher than that of flat planting and cross planting, respectively; total phosphorus loss of cross ridge planting was significantly lower than that of the other two tillage measures, accounting for 79% and 75% of that of flat planting and down slope planting, respectively;(2)with the growth of maize, the amount of runoff showed an increasing tendency(mature stage>tasseling stage>elongation stage and seedling stage); compared with the seedling stage, the runoff and the phosphorus loss of mature stage increased by 9.35 and 12.58 times, respectively;(3)surface runoff, interflow in 0—20 cm and 20—40 cm accounted for 78.36%, 10.20% and 11.44% of runoff, respectively, and their phosphorus loss accounted for 75.10%, 9.90% and 15.00% of the total phosphorus loss, respectively. The surface runoff contributed mainly to phosphorus loss, which reached up to maximum at mature stage in the study area. It was efficient to decrease runoff and phosphorus loss by ridge planting.

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Last Update: 2023-03-10