Organic fertilizer is hailed as the "nutritionist of the soil." Its production process is an environmental revolution that transforms agricultural and livestock waste into green fertilizer. The production of organic fertilizer is a crucial embodiment of the ecological agriculture concept, solving the problem of waste pollution while providing natural nutrients for crops, achieving a win-win situation of ecological cycle and agricultural efficiency.
The first step in organic fertilizer production is raw material collection and pretreatment. Raw materials come from a wide range of sources, mainly including livestock manure, crop straw, weeds, and kitchen waste. Workers screen the raw materials to remove impurities such as stones and plastics, then crush coarse fiber materials such as straw, and dewater the livestock manure to control the moisture content within a suitable range. The materials are then mixed in appropriate proportions to ensure a balanced carbon-nitrogen ratio, laying the foundation for subsequent fermentation.
Fermentation and maturation are the core stages of production and are crucial in determining the quality of the organic fertilizer. The mixed raw materials are sent to the fermentation shed, where a composting agent is added. Temperature and humidity are controlled through turning and ventilation, allowing beneficial microorganisms to multiply rapidly. During fermentation, the temperature rises to above 55°C for several days, killing pathogens, insect eggs, and weed seeds in the raw materials, and decomposing organic matter into nutrients that are easily absorbed by crops. Workers regularly monitor and adjust the process to ensure complete maturation and prevent unfermented materials from burning crop roots.
After fermentation is complete, the material enters the post-processing stage. First, the composted material is crushed and screened to remove large, incompletely composted pieces, ensuring the material is fine and uniform, preparing it for granulation. Next, the material enters the granulation process, where the crushed material is fed into a new type organic fertilizer granulator. Through extrusion and rolling, it is formed into uniformly sized granular organic fertilizer. After granulation, drying and cooling treatment is immediately performed. The granular material is first dried to a moisture content of less than 15% to prevent mold during storage, and then cooled to solidify the granules and prevent clumping. This facilitates subsequent storage, transportation, and application, and also reduces nutrient loss. Depending on the needs, a small amount of trace elements can also be added to further enhance the nutritional value of the organic fertilizer.
Finally, there is product inspection and packaging. Workers test the nutrient content, pH, and heavy metal content of the organic fertilizer. After passing the tests, it is measured, packaged, labeled, and ready for shipment and use.
A complete organic fertilizer production process not only achieves the resource utilization of waste materials but also produces high-quality, environmentally friendly fertilizers. While seemingly simple, it embodies scientific formulation and meticulous control, using the power of nature to nourish the soil and providing a strong impetus for the green and sustainable development of modern agriculture.
