Application sand Specifications of Agricultural Soil Test Sieves

Tuesday July-01 2025  15:24:59

A key advantage of agricultural soil test sieves in soil analysis is their precise particle size classification capabilities. Soil samples are complex in composition, containing sand, silt and clay of different particle sizes. Traditional manual screening is time-consuming and has low precision. In contrast, agricultural soil test sieves (such as standard soil sieves or vibrating sieves) use controllable mechanical or electromagnetic vibrations to quickly and evenly stratify soil particles according to pore size.

For example, in soil fertility assessment, test sieves can accurately separate particles of 0.075-4mm, analyze soil texture, and guide fertilization and irrigation; in pre-treatment of heavy metal detection, screening to 0.15mm ensures sample uniformity and reduces analysis errors.

Process flow of test sieves in agricultural soil screening

The collected wet soil samples are naturally air-dried, and after removing impurities such as plant residues and stones, the soil lumps are gently crushed with a soil mortar, passed through a 2mm sieve, and some fine soil is taken for screening analysis.

Use a top-impact test sieve or electric vibrating sieve machine, load a set of standard sieves (such as 2mm, 1mm, 0.5mm, 0.25mm, 0.075mm), and pour the processed soil sample into the top sieve:

Start the motor, and the equipment will classify the soil particles in the sieve by knocking up and down and vibrating horizontally; stop screening after 5-10 minutes; weigh the soil mass retained in each sieve layer separately, and calculate the proportion of each particle size.

Organize the screening results into a particle size distribution map to determine the soil type (such as loam, sandy loam, clay, etc.), combined with crop adaptability, to provide a reference for agricultural planting and improvement plans.

Specifications of agricultural soil test sieve

Mesh size (mesh)	aperture (mm)	applicable particle type
10 mesh	2.00mm	coarse sand, gravel
20 mesh	0.85mm	medium sand
40 mesh	0.425mm	fine sand
60 mesh	0.25mm	ultra-fine sand
100 mesh	0.15mm	silt sand
200 mesh	0.075mm	clay, clay, organic matter, etc.
Number of layers	recommended mesh combination	instructions
3 layers	2.00mm/0.85mm/0.075mm	coarse classification
4 layers	2.00mm/1.00mm/0.25mm/0.075mm	medium precision screening
5 layers	2.00mm/1.00mm/0.50mm/0.25mm/0.075mm	conventional laboratory particle size distribution test
6 layers	add 0.425mm and other subdivision levels	high-precision distribution analysis or scientific research purposes

What can agricultural soil test sieves be used for

Agricultural soil test sieves play a vital role in modern agriculture, and their application runs through many key links of soil analysis. For example, when conducting a census of farmland soil fertility, the collected soil samples first need to be sieved, and impurities such as stones and plant residues are removed using a sieve with a larger aperture (such as a 5mm or 10mm sieve) to ensure the purity of the samples for subsequent analysis.

In order to analyze the chemical properties of the soil (such as determining pH, organic matter, nitrogen, phosphorus and potassium content), the samples will be further ground and passed through a 2mm or 0.25mm fine sieve. This not only makes the sample particles uniform in fineness and improves the efficiency of nutrient extraction, but also meets the strict requirements of the standardized analysis method for sample particle size, thereby ensuring the comparability and accuracy of data between different batches and different laboratories.

In the analysis of soil texture (particle composition), a series of standard sieves (such as 2mm, 0.05mm, etc.) can be used to accurately separate sand, silt and other components of different particle sizes, providing a scientific basis for evaluating soil water retention capacity, aeration and crop adaptability.

In the field of agriculture, the test sieve is a basic tool for analyzing soil structure. It provides a scientific basis for agricultural production through particle classification, especially in high-standard farmland construction, agricultural scientific research, fertilization decision-making and soil and water conservation projects. It plays an irreplaceable role. The test sieve not only improves the efficiency of soil analysis, but also improves the reliability of data, providing an important guarantee for agricultural scientific management.