水土保持研究2017，Vol.24Issue(5)：347-351,5.
地膜中酞酸酯类化合物对土壤-玉米的污染及其模型模拟
Soil-Corn System Polluted by Phthalate Esters in Plastic Film and Its Model Simulation
摘要
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+0.984 X2/ln2(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.关键词
地膜/酞酸酯/模型/玉米Key words
plastic film/phthalic esters/model/corn分类
资源环境引用本文复制引用
于立红,高玉梅,吴亚铭,张有利..地膜中酞酸酯类化合物对土壤-玉米的污染及其模型模拟[J].水土保持研究,2017,24(5):347-351,5.基金项目
鸡西市指导性科技计划项目“地膜中酞酸酯类化合物对寒地玉米生理毒性及土壤酶活性的影响”(2016R167) （2016R167）
