木醋液添加牛粪堆肥过程容重时空层次变化及水分时空变化的灰色关联分析

发布时间：2018-03-02 16:35

本文选题：牛粪　切入点：堆肥　出处：《江苏农业科学》2016年04期 　论文类型：期刊论文

【摘要】：以牛粪为堆肥原料,研究木醋液添加对牛粪堆肥过程容重时空层次变化的影响及运用灰色关联分析法对木醋液添加堆体水分的时空变化动态进行分析。采用静态好氧堆肥方式,共设4个处理,浓度分别为0.5%、1.7%、2.9%的木醋液处理和不添加木醋液的对照处理CK。结果表明:堆肥过程各处理容重都存在空间层次性差异,容重随深度增加而增大,其中添加木醋液处理能够降低堆肥过程堆体的容重,从而使堆体压实度降低并缩小堆体空间容重层次性差异,有利于提高堆肥效率。4种处理堆体水分垂直空间时空变化规律不尽相同,上层(0~15 cm)与中层(15~30 cm)和中层与下层(30~45 cm)堆体水分变化的态势相似程度较高,相似程度均为3#处理2#处理1#处理CK,上层与下层的灰色关联度最小,堆体水分变化态势差异较大,但相似程度2#处理1#处理3#处理CK。灰色关联分析法可以较好地反映牛粪堆肥过程堆体水分变化趋势的相似或相异程度,通过添加木醋液能够增大堆肥过程堆体空间层次水分关联度,使堆体空间水分层次变化态势差异减小,趋于一致,有利于堆肥的进行。
[Abstract]:Using cow dung as composting material, the effect of adding wood vinegar on the change of bulk density in time and space level during cattle manure composting was studied, and the temporal and spatial changes of water content in wood vinegar were analyzed by grey correlation analysis. The static aerobic composting method was used to study the effect of adding wood vinegar liquid on the change of bulk moisture in the composting process. There were four treatments, the concentration of which was 0.5% and 2.9%, respectively. The results showed that there were spatial stratification differences in the bulk density of each treatment, and the bulk density increased with the increase of depth, the results showed that there were spatial stratification differences in the bulk density of each treatment in the composting process, and the volume density increased with the increase of the depth of the compost. The addition of wood vinegar solution can reduce the bulk density of the composting process, thus reducing the compaction degree of the heap and reducing the difference of the bulk density levels in the heap space. In order to improve composting efficiency, the vertical spatial and temporal variation of water content in 4 kinds of treatments was different, and the variation of water content in the upper layer (0 ~ 15 cm) was higher than that in the middle layer (15 ~ (30) cm) and in the middle and lower layer (30 ~ 45 cm). The similarity degree is all about the CK treated with 1# at 2#, the grey correlation degree between upper layer and lower layer is the smallest, and the variation trend of water content of pile body is quite different. But the degree of similarity was similar to that of the treatment of 1#, CK.Grey relational analysis could reflect the similarity or difference of the trend of water change in the composting process of cow manure. By adding wood vinegar solution, the correlation degree of water in the space level of the compost can be increased, and the variation trend of the water level in the space of the pile can be reduced, which is beneficial to the composting process.
【作者单位】：塔里木大学机械电气化工程学院/新疆维吾尔自治区普通高等学校现代农业工程重点实验室;
【基金】：国家自然科学基金(编号:51266014) 新疆生产建设兵团博士基金(编号:2011BB012)
【分类号】：S141.4

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