西藏耐低温菌群发酵堆肥质量的指标选择--以水稻秸秆堆肥为例

Selection of indexes for evaluation of compost quality of low temperature resistant bacteria in Tibet:a case study of rice straw compost

旨在通过对秸秆低温发酵过程中堆肥成分的变化进行的一定分析来确定评价指标,简化品质评价的过程.对全氮、全磷、全钾、总有机质、碳氮比以及失重率等6项成分指标进行分析.结果表明:主成分分析仅有一个主成分,累计贡献率达98.23%;利用主成分分析得到的主成分指标数据进行进一步聚类分析可分为2类品质指标.选用失重率和有机质2个指标可以反映水稻秸秆低温发酵堆肥的质量.

This paper aims to determine the evaluation index and simplify the process of quality evaluation by analyzing the changes of composting composition during low-temperature fermentation of straw.Six components including total nitrogen,total phosphorus,total potassium,total organic matter,carbon nitrogen ratio and weight loss rate were analyzed.The results showed that the principal component analysis had only one principal component,which contributed 98.23% accumulatively.Further cluster analysis using principal component index data obtained from principal component analysis can be divided into two categories of quality indicators.Two quality indexes,weight-loss ratio and organic matter,can be used to reflect the low temperature fermentation quality of rice straw.