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木质纤维素降解是中草药渣堆肥的主要难点.在前期小试的基础上,接种纤维素降解菌剂,将1 t新鲜药渣直接进行好氧堆肥.腐熟度指标T值和种子发芽指数(GI)显示,堆肥19 d左右就已经腐熟.堆肥过程中接种组(JZ)和对照组(CK)的纤维素平均降解速率分别为0.73 kg/d和0.64 kg/d,JZ比CK纤维素降解总量提高了13.39%,木质素降解量提高118.18%.第30天时,堆肥的含水率、p H、总养分、重金属等指标都达到有机肥料标准(NY 525-2012).接种菌剂提高了堆肥温度,加速了水分散失,促进了纤维素和木质的转化,有利于堆肥腐熟和提高肥料品质.因此,在中试规模上堆肥中草药渣生产有机肥是可行的.
Lignocellulosic degradation is the main difficulty of Chinese herbal dregs compost.On the basis of preliminarily small scale experiments, inoculation of cellulose-degrading bacterium and 1 t fresh dregs were directly conducted for aerobic composting.The maturity index T and seed germination index ) Showed that the compost matured about 19 days.The average degradation rate of cellulose in the inoculation (JZ) and control (CK) groups was 0.73 kg / d and 0.64 kg / And the amount of degraded lignin increased by 118.18% .At the thirtieth day, the compost’s moisture content, p H, total nutrients, heavy metals and other indicators reached the standard of organic fertilizer (NY 525-2012) .The inoculation increased the compost Temperature accelerated the water loss, promoted the conversion of cellulose and wood, which was good for compost composting and fertilizer quality improvement.Therefore, it is feasible to produce organic fertilizer by composing Chinese herb residue on pilot scale.