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研究了甘蔗叶与牛粪混合物不同堆肥方式对氮素转化规律的影响。将甘蔗叶与新鲜的牛粪以1∶3的质量比充分混合,在同样的外界条件下,采用密闭容器强制通风法和翻堆法两种好氧发酵法进行堆肥。结果表明,翻堆堆肥相比于通风堆肥:温度高2.1~5.2℃,有机质降解率高28.25%,最终含水率高8.08%,最终pH值高0.12。这些因素的不同导致通风堆肥的硝态氮高出翻堆堆肥23~165mg·kg-1;氨氮含量前13d通风堆肥高出翻堆堆肥48~1 017mg·kg-1,后期翻堆堆肥高出1~42mg·kg-1;亚硝态氮含量前9d翻堆堆肥高出通风堆肥285~425mg·kg-1,后期通风堆肥高出41~118mg·kg-1。表明,两种不同堆肥方式中氮素的转化规律不同,翻堆堆肥更有利于促进氮素转化。
The effects of different composting modes on the transformation of nitrogen were studied. The sugar cane leaves and fresh cow dung at a 1: 3 mass ratio of the full mixing, under the same external conditions, the use of closed container forced ventilation and turn pile method of two aerobic fermentation compost. The results showed that compared with ventilated compost, the composting of compacted pile: the temperature was 2.1 ~ 5.2 ℃, the organic matter degradation rate was 28.25%, the final water content was 8.08% and the final pH was 0.12. The difference of these factors led to the compost nitrogen fertilizer is 23 ~ 165mg · kg-1 higher than that of the re-composting; the ventilation compost is 48 ~ 1 017mg · kg-1 higher than that of the reheating compost 13 days before the ammonia nitrogen content, 1 ~ 42mg · kg-1. The compost composting was 285 ~ 425mg · kg-1 higher than that of ventilation compost in the first 9 days of nitrite-nitrogen compostation, and the latter was 41 ~ 118mg · kg-1 higher than the latter. The results showed that the nitrogen transformation patterns were different between the two composting methods, and turning over composting was more conducive to promoting nitrogen transformation.