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为探求秸秆腐熟剂与猪粪对秸秆堆肥的腐熟效果,应用实验室研制的秸秆腐解菌剂,开展了种养废弃物堆肥发酵生产有机肥试验。通过检测温度、含水率、pH及有机质含量等堆肥腐熟度指标,结果表明:加菌剂的猪粪堆肥处理组(T_4),堆肥温度上升快,且持续时间长,60℃以上温度共持续8 d,最高温度达到68℃;堆肥水分蒸发快,比其他处理组含水率下降幅度较大,含水率由65%下降至37%;pH变化范围为7.7~9.2,表现弱碱性;有机质含量变化显示,T4处理堆腐时间较添加猪粪处理(T_3)提前4 d,比菌剂处理(T_2)提前8 d完成堆腐,表现出比其他处理明显缩短堆腐时间。为观察秸秆腐解菌剂对秸秆横截面结构变化的影响,利用扫描电子显微镜(扫描电镜)对3种秸秆处理组进行了比较分析。
In order to explore the maturity effect of straw composting agent and pig manure on straw composting, the straw decomposing agent developed in laboratory was used to test the organic fertilizer production by fermentation of composting litter. The results showed that the composting pig manure composting treatment group (T_4), composting temperature increased rapidly, and the duration of long, 60 ℃ above the temperature for a total of 8 d, the maximum temperature reached 68 ℃; compost moisture evaporation faster than other treatment groups, a larger decline in water cut, moisture content decreased from 65% to 37%; pH ranged from 7.7 to 9.2, showing weakly alkaline; organic matter content changes The results showed that compared with the other treatments, the composting time of T4 was faster than that of the other treatments (4 days earlier) than that of the pig manure treatment (T_3), and 8 days earlier than that of the fungicide treatment (T_2). In order to observe the effect of straw decomposing agent on the structure change of straw cross section, the three kinds of straw treatment groups were compared by scanning electron microscope (SEM).