2026/05/20
When the turning frequency is too high, heat is quickly dissipated from the pile, making it difficult to reach the sterilization standard of 55-70℃, thus failing to effectively kill insect eggs and harmful bacteria. Frequent turning also causes excessive moisture loss, disrupting the microbial environment, slowing down organic matter decomposition, prolonging the fermentation cycle, increasing equipment wear and electricity costs, and disrupting the microbial balance, which is detrimental to material maturation.
When the turning frequency is too low, the disadvantages are even more pronounced. Insufficient oxygen supply inside the pile easily leads to anaerobic fermentation, producing large amounts of odorous gases and polluting the production environment. Heat cannot be dissipated in time, easily leading to high-temperature burning, killing beneficial bacteria, and causing nutrient loss. Long-term infrequent turning also results in uneven material mixing, large differences in moisture content, uneven fermentation progress, material caking, and ultimately poor maturity of the finished product, failing to meet agricultural standards. Appropriate turning frequency not only replenishes oxygen in a timely manner, ensuring the normal reproduction of aerobic microorganisms and accelerating material decomposition, but also rationally regulates pile temperature, achieving harmless treatment and quickly expelling harmful gases to deodorize. Reduce turning during the fermentation heating stage to facilitate rapid temperature increase; moderately increase frequency during the high-temperature maturation stage to control temperature and supply oxygen; and reduce frequency during the later maturation stage to stabilize nutrients.
Adjusting the frequency according to the characteristics of different raw materials such as manure, straw, and sludge, and coordinating it with walking speed, can significantly improve fermentation efficiency, shorten maturation time, and produce high-quality organic fertilizer with sufficient nutrients and meeting quality standards.
