ISO 21263-2017 缓释肥料--营养物质释放的测定--包覆肥料的方法 Slow-release fertilizers — Determination of the release of the nutrients — Method for coated fertilizers
- 标准类别:
- 标准大小:
- 标准编号:ISO 21263-2017
- 标准状态:现行
- 更新时间:2023-10-30
- 下载次数:次
This document specifies a method for the determination of the slow release properties of nutrients from coated fertilizers. pH-dependent hydrolysis and degradation by biological or microbial mechanisms are excluded.
The specified method is only applicable to products releasing any nutrients by means of a non-biological process (i.e. those where the nutrients are released by a physical mechanism). Microbial attack on the coating (e.g. sulfur coated fertilizers) and the consequences thereof are not measurable by the technique described.
This method involves a lengthy process which may not be appropriate for day to day testing purposes. Accelerated methods can be used provided they are correlated with this document. An example of such an accelerated method is described in Annex B. Regression analysis can also be used for this purpose.st edition
2017-12
Slow-release fertilizers —
Determination of the release of
the nutrients — Method for coated
fertilizers
Engrais à libération lente — Détermination du mode de libération des
éléments nutritifs — Méthode applicable aux engrais enrobés
Reference number
ISO 21263:2017(E)
?
ISO 2017
ISO 21263:2017(E)
COPYRIGHT PROTECTED DOCUMENT
? ISO 2017
-
GB 30871-2022免费下载危险化学品企业特殊作业安全规范 2023-10-30
-
GB/T 1094.1-2013电力变压器 第1部分:总则 2023-10-30
-
GB/T 706-2016热轧型钢 2023-10-30
-
JB/T 10216-2013电控配电用电缆桥架 2023-10-30
-
GB 9706.1-2020医用电气设备 第1部分:基本安全和基本性能的通用要求 2023-10-30
-
GB/T 10801.2-2018绝热用挤塑聚苯乙烯泡沫塑料(XPS) 2023-10-30
-
GB/T 13663.2-2018给水用聚乙烯(PE)管道系统 第2部分:管材 2023-10-30
-
GB 51251-2017建筑防烟排烟系统技术标准 2023-10-30