Fertilizer detection, organic fertilizer content detection and analysis

Organic fertilizers play a very important role in the growth process of crops. By applying organic fertilizers reasonably, soil fertility can be effectively improved to enhance crop yield and quality. The content of organic matter in soil is an important basis for determining soil fertility. Therefore, special attention should be paid to determining the content of organic matter in organic fertilizers in agricultural cultivation. As a professional third-party testing organization——Zhongke Testing is launchedOrganic fertilizer content detection and analysis.

The organic matter in organic fertilizers refers to organic compounds containing carbon. Organic matter in organic fertilizers comes from a wide range of sources, including microorganisms, animal residues, plant residues, excrement and secretions from microorganisms, animals, and plants, as well as other wastewater and waste residue! 1. Organic matter is mainly composed of tree sap, wax, carbohydrates, proteins, lignin, and other components. Meanwhile, organic matter contains various nutrients required for plant growth and development, such as nitrogen, phosphorus, potassium, iron, calcium, sulfur, magnesium, etc. Organic matter provides various nutrients for plant growth and is one of the main sources of nutrition during the plant growth process.

The organic matter in organic fertilizers also plays an important role in improving the physical properties of soil, promoting the formation of aggregate structure, and enhancing soil water retention, fertilizer retention, and buffering capacity. From this, it can be seen that organic matter, as an important component of organic fertilizers, its content is an important basis for judging soil fertility, and determining its content is also a major item in fertilizer analysis.

Analysis of Organic Fertilizer Testing Methods

currentlyMethods for detecting organic fertilizersThere are many, the common ones areCapacity method, quality method, colorimetric methodWait. At present, the standard for detecting organic matter in organic fertilizers is NY525-2012 "Organic Fertilizer", which is a published measurement standard and the widely used potassium dichromate volumetric method.

Testing items for organic fertilizer content
Cadmium, chromium, lead, manganese, boron, calcium, sulfur, magnesium, iron, phosphorus pentoxide, zinc, potassium oxide, organic matter, total nitrogen, effective viable bacteria count, moisture content, pH value, fecal coliform count, roundworm egg mortality rate, heavy metals, etc

Analysis of various indicators in organic fertilizer testing

The effective live bacteria count index of organic fertilizers should be ≥ 20 million/g

The organic matter content index of organic fertilizers should be ≥ 45%

The moisture content index of organic fertilizers should be ≤ 30%

The pH index of organic fertilizers should be between 5.5-8.5

The indicator of fecal coliforms in organic fertilizers should be ≤ 100 per gram

The mortality rate of roundworm eggs in organic fertilizers should be ≥ 95%

The total nutrient quality index of organic fertilizers should be ≥ 5%

Heavy metals in organic fertilizers (mercury ≤ 2mg/kg, lead ≤ 50mg/kg, arsenic ≤ 15mg/kg, cadmium ≤ 3mg/kg, chromium ≤ 150mg/kg)

Soil and fertilizer testing has always played a very important role in evaluating the quality of land cultivation, testing soil for formula fertilization, water-saving engineering in agriculture, and even fertilizer market supervision. At the current stage, strengthenOrganic fertilizer content detection and analysis, is a good method for further improving and enhancing products,Zhongke TestingOrganic fertilizer content detection and analysisData can improve product quality and reduce production costs.