Walking through farmland and gardens, we often hear the term "organic fertilizer," hailed as a "nutritional meal" for the soil, making crops grow stronger and taste better. But many people don't know that these gentle fertilizers mostly come from "waste" around us, undergoing a series of scientific processes to transform from "garbage" into "treasure." Today, let's understand step by step how organic fertilizer is made.
The first step in creating organic fertilizer is collecting raw materials, which is also the starting point of "turning waste into treasure." Its raw materials are very diverse: corn stalks and wheat stalks from the fields, chicken and cow manure from farms, kitchen waste (fruit peels, vegetable leaves, leftovers), and by-products such as peanut cake and soybean meal are all good materials for making organic fertilizer. These raw materials may seem useless, but they are actually rich in essential nutrients for crops such as nitrogen, phosphorus, and potassium; they just need to be processed before they can be absorbed by crops.
After collecting the raw materials, they need to undergo preliminary processing to prepare for subsequent fermentation. Workers first sort the raw materials, removing impurities such as stones and plastics to avoid affecting fertilizer quality. Next, coarse materials like straw and branches are crushed and thoroughly mixed with livestock manure and kitchen waste. This increases the contact area, allowing for more even and thorough fermentation. At this stage, the mixing ratio is adjusted according to the types of raw materials to ensure smooth fermentation.
Fermentation and decomposition are the most crucial steps in organic fertilizer production and the key to fertilizer quality. Workers pile the processed raw materials into neat heaps, controlling the temperature and humidity to allow natural microorganisms to thrive. During fermentation, the heap temperature gradually rises, reaching a maximum of around 60℃. This high temperature kills pathogens, insect eggs, and weed seeds in the raw materials, preventing soil contamination. After 15-25 days of fermentation, the raw materials gradually turn black and soften, and the initially pungent odor transforms into a faint earthy aroma, indicating that fermentation is complete.
The fermented raw materials then need to be processed and shaped to become the organic fertilizer we commonly see. Workers dry the decomposed materials to remove excess moisture and prevent mold growth during storage. Then, they crush and granulate the materials as needed, producing granules or powder for easy transport and use. Finally, after rigorous testing to ensure the organic fertilizer meets standards for organic matter content and hygiene, it is packaged and delivered to growers.
From field straw and kitchen waste to fertile organic fertilizer, this is not just a simple organic fertilizer processing process, but a green cycle.. The production of organic fertilizer solves the problem of waste pollution and replenishes soil nutrients, making planting more environmentally friendly and healthier. The next time you use organic fertilizer, remember its history and appreciate the green power of recycling.
