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.
地膜中酞酸酯类化合物对土壤-玉米的污染及其模型模拟
- Title:
- Soil-Corn System Polluted by Phthalate Esters in Plastic Film and Its Model Simulation
- Keywords:
- plastic film; phthalic esters; model; corn
- 分类号:
- X53
- 摘要:
- 采用盆栽试验研究了不同地膜残留量处理酞酸酯类化合物邻苯二甲酸二丁酯（DBP）、邻苯二甲酸二异辛酯（DEHP）对土壤—玉米体系的污染及模型模拟。结果表明：土壤中DBP含量0.024～0.553 mg/kg，DEHP含量在0.251～7.120 mg/kg；植株中DBP含量0.222～1.434 mg/kg，DEHP含量0.022～0.234 mg/kg。各生育时期各处理土壤中DBP和DEHP含量变化规律相同，高倍地膜残留量处理DBP，DEHP含量高于低倍残留量。土壤中DEHP含量明显高于DBP含量，植株中DEHP含量很低。采用3次重复试验数据建立了土壤与植株中DBP和DEHP含量关系模型，模型通过了显著性检验，达到了极显著水平（p < 0.01）。DBP模型的最优模型为F=0.438+0.984X2/（ln2（X））（R=0.809）；DEHP模型的最优模型为F=0.003X3-0.025X2+0.062X+0.024（R=0.797）。采用与建立模型相独立的数据对模型进行了检验，DBP和DEHP最优模型的平均预测误差为17.5%和19.24%，模型计算值与实测值之间的相关系数R为0.712，0.743，模型符合程度较好。模型的建立可以为我国农田酞酸酯类化合物精准管理提供理论依据。
- 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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备注/Memo
收稿日期:2016-06-12;改回日期:2016-09-20。
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）
作者简介:于立红(1978-),女,吉林省榆树市人,硕士,讲师,从事农业环境保护方面的研究。E-mail:ylh-303@163.com
通讯作者:张有利(1976-),男,山东省安丘市人,硕士,讲师,主要从事农业水土工程及农业环境方面的研究。E-mail:zhangyouli409@sina.com