不同类型地膜添加对辽西褐土硝化潜势的影响
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作者单位:

(1.辽宁省农业科学院耕作栽培研究所,辽宁 沈阳 110161;2.国家农业环境阜新观测实验站,辽宁 阜新 123100;3.沈阳农业大学水利学院,辽宁 沈阳 110866)

作者简介:

冯晨(1985-),女,辽宁大石桥人,副研究员,博士,主要从事旱作农业研究。E-mail:sandyla570521@126.com。

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基金项目:

基金项目:国家自然科学基金青年基金(41807388);辽宁省兴辽英才计划(XLYC1807056);辽宁省农业科学院学科交流合作项目(2020HZ062001);辽宁省自然基金项目(2019-MS-194)。


Effects of different types of plastic film addition on potential nitrification of cinnamon soil in west Liaoning
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(1.Institute of Crop Cultivation and Farming System,Liaoning Academy of Agricultural Sciences,Shenyang Liaoning 110161;2.National Agricultural Experimental Station for Agricultural Environment,Fuxin Liaoning 123100;3.College of Water Conservancy,Shenyang Agricultural University,Shenyang Liaoning 110866)

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    摘要:

    土壤硝化作用是肥料氮素进入到土壤中后参与氮素循环的关键过程,为了明确不同种类地膜对辽西褐土硝化活性的影响,本试验采用室内培养分析的方法,研究3种不同类型地膜(普通PE膜,PBAT全生物降解地膜和氧化-生物降解地膜)及不同地膜添加量(0、300、900 kg/hm2)对辽西褐土硝化潜势的影响,探讨可降解地膜的混入是否会对土壤微生物硝化作用产生抑制和毒害作用。结果表明,与对照土壤相比,添加普通PE膜(T1)、PBAT生物降解膜(T2)和氧化-生物降解膜(T3)并没有显著影响土壤的硝化潜势,3种地膜添加后土壤硝化潜势表现为T1[NO2-N 5.61 ng/(g·h)]>T2[(NO2-N 4.30 ng/(g·h)]>T3[NO2-N 3.42 ng/(g·h)],且对于普通PE膜和PBAT生物降解膜处理土壤,存在随着地膜添加量增加硝化潜势降低的趋势。通过进一步计算和评估,基于3种供试地膜的污染土壤未对土壤微生物硝化作用产生抑制和毒害作用。研究结果丰富了可降解地膜对土壤环境影响的相关理论,为实现可降解地膜在辽西地区推广应用提供数据参考。

    Abstract:

    Soil nitrification is a key process in which fertilizer nitrogen participates in the nitrogen cycle.In order to clarify the influence of different types of plastic film on nitrification activity of cinnamon soil in western Liaoning,a laboratory culture experiment was conducted,to study the effects of three different types of plastic film(Common PE film,PBAT biodegradable film and oxidation-biodegradable film) and three different amounts of plastic film(0,300 and 900 kg/hm2) on the nitrificatioon potential of cinnamon soil in the west of Liaoning province and discuss whether the mixing of degradable film will affect soil microbial nitrification produces inhibitory and toxic effects.The results showed that adding common PE film(T1),PBAT biodegradable film(T2) and oxidation-biodegradable film(T3) did not significantly influence the potential nitrification of cinnamon soil,and the potential nitrification was in order of T1[NO2-N 5.61 ng/(g·h)]> T2[NO2-N 4.30 ng/(g·h)]> T3[NO2-N 3.42 ng/(g·h)] .As the amount of common PE film and PBAT biodegradable film increasing,the potential nitrification showed a decreasing trend.Further calculation and evaluation showed that the contaminated soil based on the three kinds of mulching films did not inhibit and poison the soil microbial nitrification.These results enrich the relevant theories on the influence of degradable plastic film on soil environment and provide data reference for promoting and applying degradable plastic film in western Liaoning.

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冯晨,冯良山,孙占祥,郑家明,白伟,杨宁,张哲,向午燕,王淑君,蔡倩.不同类型地膜添加对辽西褐土硝化潜势的影响[J].中国土壤与肥料,2021,(4):54-58.

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  • 收稿日期:2020-09-07
  • 最后修改日期:
  • 录用日期:2020-09-24
  • 在线发布日期: 2021-09-15
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