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摘要:通过2次室外中型堆肥试验,研究了在相同水分条件(68.8%),不同调理剂、不同碳氮比(C/N)、不同通气方式和不同添加剂对猪粪堆肥进程的影响,及各种指标在堆肥进程中的变化趋势,并提出了猪粪堆肥的腐熟指标。研究表明,固相C/N、NH+4-N含量、种子发芽率是较好地反映猪粪堆肥腐熟进程的生化指标,当固相C/N降至20∶1以下、NH+4-N含量小于20mg·kg-1、种子发芽率>70%时,可判定堆肥已腐熟。依据上述指标,并结合粪便无害化指标,可判定本研究中除第一次堆肥第一组、第二次堆肥第七组外,其余各组在第30～35d时已腐熟。
Abstract: The effect of two ext.medium compost tests on the composting process of pig manure under the same moisture condition (68.8%), different conditioners, different C / N ratios, different aeration modes and different additives were studied. Various indicators in the composting process trends, and put forward composting pig manure maturity indicators. The results showed that solid phase C / N, NH + 4-N content and seed germination rate were the biochemical indicators that better reflect the maturation process of pig manure composting. When solid phase C / N was reduced to below 20:1, NH + 4- N content of less than 20mg · kg-1, seed germination rate> 70%, the compost can be judged composting. Based on the above indicators, combined with the indicators of harmlessness of faeces, we can conclude that except for the first group of the first compost and the second compost of the seventh group, the rest of the groups are already matured at the 30th-35th days.