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[1]YU Lihong,GAO Yumei,WU Yaming,et al.Soil-Corn System Polluted by Phthalate Esters in Plastic Film and Its Model Simulation[J].Research of Soil and Water Conservation,2017,24(05):347-351.

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Soil-Corn System Polluted by Phthalate Esters in Plastic Film and Its Model Simulation

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 05 Page number: 347-351 Column: Public date: 2017-10-28

Title:: Soil-Corn System Polluted by Phthalate Esters in Plastic Film and Its Model Simulation

Author(s):: YU Lihong¹, GAO Yumei², WU Yaming¹, ZHANG Youli¹; 1. Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China;
2. Jixi City Forest Pest Control and Quarantine Station, Jixi, Heilongjiang 158100, China

Keywords:: plastic film; phthalic esters; model; corn

CLC:: X53

DOI:: -

Abstract:: The pot experiment was conducted to study the pollution of dibutyl phthalate(DBP), ethylhexyl phthalate (DEHP) in soil and corn with different residual amounts of mulching plastic film and the model simulation. According to the experiment, contents of DBP are 0.024～0.553 mg/kg and contents of DEHP are 0.251～7.120 mg/kg in soil. contents of DBP are 0.222～1.434 mg/kg and contents of DEHP are 0.022～0.234 mg/kg in plant. The contents of DBP and DEHP in high residual mulching film samples are higher than those in the low and the difference is significant. Change patterns of DBP and DEHP in soil are same in corn growth periods with different residual amounts of mulching plastic film. The contents of DBP and DEHP in high residual mulching film samples are higher than those in the low. Content of DEHP in soil is significantly higher than DBP. Contents of DEHP in plants are very low. The model is established by repeated 3 times test data of DBP and DEHP contents in soil and plant relationship model, model passes the test of significance, reaches to the significant level (p < 0.01). Optimal model of DBP content in soil and plant is F=0.438+0.984X²/(ln²(X))(X)(R=0.809). Optimal model of DEHP is F=0.003X³-0.025X²+0.062X+0.024(R=0.797). Independent data are used to test the model. The average prediction errors of DBP and DEHP model are 17.5% and 19.24%. The correlation coefficients of model between calculated value and measured data are 0.712 and 0.743. The fit level of the model is good. The model can provide theory basis for precise management of phthalate esters in farmlands.

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