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中国农学通报 ›› 2015, Vol. 31 ›› Issue (20): 177-180.doi: 10.11924/j.issn.1000-6850.casb15010093

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

控释肥包衣剂的控释性能研究

蒋利华,文卓琼,王 锦,熊远福,唐 丽,熊海蓉   

  1. 长沙环境保护职业技术学院,武昌工学院,湖南农业大学理学院,湖南农业大学理学院,湖南农业大学理学院,湖南农业大学分析测试中心
  • 收稿日期:2015-01-15 修回日期:2015-02-11 接受日期:2015-03-09 出版日期:2015-07-28 发布日期:2015-07-28
  • 通讯作者: 蒋利华
  • 基金资助:
    农业部公益性行业(农业)科研专项(201303103); 湖南省科技厅计划项目(2010FJ6022); 湖南省科技厅计划项目(2013NK3034)。

Study on Controlled-release Properties of Coating-agent for Controlled-release Fertilizer

  • Received:2015-01-15 Revised:2015-02-11 Accepted:2015-03-09 Online:2015-07-28 Published:2015-07-28

摘要: 为了探明控释肥包衣剂的控释性能,参考国标GB/T8572-2001对样品进行前处理,测定样品中N、P、K含量,并测定包衣肥中养分初期释放率、微分释放率和养分累积释率。结果显示:包衣肥中养分N、P、K的初期释放率<15%,其中N的初期释放率大于P和K的初期释放率;与未包衣的对照肥相比,包衣肥养分N、P、K的初期释放率均明显降低,包衣肥中养分的释放更均匀平稳,能够满足作物生长中对养分的需求,提高肥料利用率,表明控释肥包衣剂的控释性能良好。

关键词: 稻秆还田, 稻秆还田, 腐熟, 土壤培肥, 增产效应

Abstract: In order to explore the controlled release properties of coating- agent, the author carried out pretreatment of the samples referring to the national standard GB/T 8572-2001 and measured N, P, K content in the samples. The initial release rate, differential release rate and cumulative release rate of coated fertilizer nutrients were detected. The results showed that the initial release rates of N, P, K in the coated fertilizer were less than 15%, and the initial release rate of N was greater than that of P and K. Compared to the uncoated fertilizer, the initial release rates of N, P and K of the coated fertilizer were significantly lower, nutrients in the coated fertilizer could release more evenly, and could meet the nutrients demand of crop growing and improve the fertilizer use efficiency. The data proved that the controlled-release fertilizer had good controlled-release properties.