复合控释材料的控释性能、肥效及其成膜特性研究
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* 国家863计划“环境友好型肥料研制与产业化”项目(2001AA.246023);广东省百项工程控释专用肥项目(2KB05601N);广州市重点科技攻关“控释肥的技术研究与开发”项目(2001Z02402)资助


RELEASE-CONTROLLING COMPLEX MATERIAL’S CAPABILITY, FERTILIZER EFFICIENCY AND COATING CHARACTERISTICS
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    摘要:

    膨润土和木素制成复合控释材料用于包膜控释肥。电镜扫描研究表明,复合材料包膜厚度明显比单用膨润土处理薄,且膜孔隙量少,粒间堆积较紧密。土柱淋溶试验表明,膨润土及其复合材料包膜尿素50 d的氮素累积溶出率远低于普通尿素,三种包膜尿素处理分别比普通尿素降低8.61、14.01、15.22个百分点。两种复合材料包膜处理氮素累积溶出量分别比单用膨润土包膜处理降低11.31%、13.83%。盆栽、大田小区试验表明,复合材料包膜尿素可明显提高作物产量及氮肥利用率。膨润土与木素复合用作控释材料在研制适合我国国情的农用控释肥方面是可行的。

    Abstract:

    Bentonite and lignin were blended and prepared into a kind of releasing-controlling material,which was then used as coating for manufacture of coated-controlled-release fertilizer.The scanning electron photomicrographs showed that the coating was thinner,with fewer cracks and more compact intergranular deposit than the coating of mere bentonite.The soil column leaching test indicated that the cumulative N leaching rate of the urea coated with either bentonite or the complex within 50 days was much lower than that of common urea.In three coat ing treatments,it decreased by 8.61% ,14.01% and 15.22% , respectively,in comparison with CK,common urea.The total N leaching of the two treatments using complex materials as coating was 11.31% ,13.83% lower than the treatment using bentonite as coating.The pot and field trials also showed that application of urea coated with either complex could significantly increase crop yield and N recovery rate,suggesting that it is advisable to use.The mixture of bentonite and lignin as coating material,which suits the conditions of the country in developing controlled-release fertilizer.

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孙克君,卢其明,毛小云,廖宗文.复合控释材料的控释性能、肥效及其成膜特性研究[J].土壤学报,2005,42(1):127-133. DOI:10.11766/trxb200402130120 Sun Kejun, Lu Qiming, Mao Xiaoyun, Liao Zongwen. RELEASE-CONTROLLING COMPLEX MATERIAL’S CAPABILITY, FERTILIZER EFFICIENCY AND COATING CHARACTERISTICS[J]. Acta Pedologica Sinica,2005,42(1):127-133.

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  • 收稿日期:2004-02-13
  • 最后修改日期:2004-06-30
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  • 在线发布日期: 2013-02-25
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