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土壤的容重、总孔隙度、重力孔隙度和非重力孔隙度,在评价土壤物理性能和土壤肥力方面,均具有重要意义。测定上述土壤物理性质的常规方法,都要有烘干步骤。本文试图省去烘干步骤,仅据环刀内含有一定水量的土重,直接计算出这些土壤物理性质的数值。本文的简易方法,不需要烘箱设备,具有省电、省时间的优点,而又可以达到实用上可行的准确度,因此在野外工作条件下是比较适用的。 一、设 备 (-)环刀 常用环刀的取土容积应为100.00厘米~3。但各厂家工艺水平不同,很难达到上述要求。据对19个环刀测量结果,环刀取土容积在99.14-102.86厘米~3之间,环刀容积在100.91-101.23厘米~3之间,
Soil bulk density, total porosity, gravity porosity and non-gravity porosity are of great importance in evaluating soil physical properties and soil fertility. The conventional method of determining the physical properties of the above soil requires a drying step. This paper tries to omit the drying step, according to the ring knife contains only a certain amount of soil weight, directly calculate the physical properties of these soil values. This simple method does not require oven equipment, with the advantages of saving electricity, saving time, but can achieve practical and feasible accuracy, so the working conditions in the field is more applicable. First, the equipment (-) Ring Knife ring knife commonly used soil volume should be 100.00 cm ~ 3. However, different manufacturers of different levels of technology, it is difficult to achieve the above requirements. According to the results of 19 ring knife measurements, ring cutter soil volume between 99.14-102.86 cm ~ 3, ring knife volume between 100.91-101.23 cm ~ 3,