1.1 本规程涵盖了从压缩捆或散装松散材料源中获取加工泥炭材料代表性样品的程序。本程序适用于出于园艺目的对泥炭材料进行采样，并产生一个代表性的泥炭材料样本，该泥炭材料可能具有异质性。对于可用于验证泥炭等级的任何测试或分析程序，制作材料的代表性样品对于结果的有效性至关重要。 1.2 单位- 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考，不被视为标准值。 1.3 所有观察值和计算值应符合实践中确定的有效数字和舍入准则 D6026 . 1.3.1 本标准中用于规定如何收集/记录或计算数据的程序被视为行业标准。 此外，它们代表了通常应保留的有效数字。使用的程序不考虑材料变化、获取数据的目的、特殊目的研究或用户目标的任何考虑因素；通常的做法是增加或减少报告数据的有效位数，以与这些考虑因素相称。考虑工程设计分析方法中使用的有效数字超出了本标准的范围。 1.4 本实践提供了一组用于执行一个或多个特定操作的说明。本文件不能取代教育或经验，应与专业判断一起使用。并非本惯例的所有方面都适用于所有情况。本ASTM标准不代表或取代必须根据其判断给定专业服务的充分性的谨慎标准，也不应在不考虑项目的许多独特方面的情况下应用本文件。 本文件标题中的“标准”一词仅表示该文件已通过ASTM共识程序获得批准。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 这种做法主要用于园艺行业，以收集加工泥炭材料的代表性样本。 代表性样品可用于进一步测试，包括但不限于测定水分、灰分和有机物；体积酸碱度；，含水泥炭材料的持水量和空气容量；总氮；粒度分布；以及加工泥炭材料的含砂量。 注1: 本标准产生的结果的质量取决于执行该标准的人员的能力，以及所用设备和设施的适用性。符合实践标准的机构 D3740 通常认为能够胜任和客观的测试/采样/检查等。本标准的用户应注意遵守惯例 D3740 本身并不能保证可靠的结果。可靠的结果取决于许多因素；实践 D3740 提供了一种评估其中一些因素的方法。

1.1 This practice covers the procedure for obtaining a representative sample of processed peat material from compressed bales or bulk loose material sources. This procedure is applicable for sampling peat materials for horticultural purposes and produces a sample that is representative of peat materials that may be heterogeneous in nature. Producing a representative sample of a material is central to the validity of the results for any testing or analytical procedure which can be used to verify the grade of peat. 1.2 Units— The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only and are not considered standard. 1.3 All observed and calculated values shall confirm to the guidelines for significant digits and rounding established in Practice D6026 . 1.3.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. 1.4 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word ”Standard” in the title of this document means only that the document has been approved though the ASTM consensus process. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This practice is primarily used in the horticulture industry to collect a representative sample of processed peat materials. The representative sample can then be used for further testing including, but not limited to, the determination of moisture, ash, and organic matter; volume; pH;, moisture-holding capacity, and air capacity of water-saturated peat materials; total nitrogen; particle size distribution; and sand content of processed peat materials. Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.