山东农业大学学报（自然科学版）2017，Vol.48Issue(5)：716-721,6.DOI:10.3969/j.issn.1000-2324.2017.05.016
几种农业废弃物堆肥过程中理化性状的变化研究
Study on the Changes of Physicochemical Properties in Composting Processes of Several Agricultural Wastes
摘要
Abstract
In our country, agriculture by-product resources are excessive and badly wasted and resulted in environment problems. It has important research significance and research value through high temperature composting process. The experiment studied the physical and chemical properties change of several kinds of agricultural waste during the composting process, the result showed that:at the beginning of the composting process, the temperature of each material rapidly elevated and lasted for a while, followed by a quick drop, the speed of temperature rose and the maximum temperature differed from material to material. Turn piles may enhance the compost temperature. It was not necessary to add water to the whole process of decomposition of corn straw, wheat straw was very difficult to absorb water before composting, but after short composting time, its water-absorptivity boosted up greatly. Cotton straw dehydrated faster, and need to add water constantly during the decomposition process. Bean straw and mushroom residue compost only need to water in the earlier period. In the composting process, each kind of materials tends to increase water-holding pores. For corn straw, wheat straw and bean straw, changes tendency of their pH value present decline first, then elevate, and decline again subsequently, pH value of mushroom residue and cotton straw increased first and then decreased, but their curves were different. The conductivity of all kinds of materials (EC) shows the trend of elevating first, then reducing. The anti-decomposition ability of mushroom residue is the strongest, the decomposition ability of dicotyledonous plant straw is stronger than that of single leaf plant straw. The volume and weight of single cotyledons were reduced in the process of decomposition. With the process of decomposition, the bulk density increased in different degrees. Each material's NH4+N and total N elevated at the earlier period, then reduced at later period, and the C/N ratio (C/N) of all materials showed a downward trend. Germination Indexes(GI) of various substrates increased rapidly after different composting period, and GI closed to or exceeded 100% in later stage. Agricultural waste compost products can be applied to all aspects of agriculture, and there are many new applications.关键词
农业废弃物/堆肥/理化性状变化Key words
Agricultural waste/compost/physical and chemical properties change分类
农业科技引用本文复制引用
时连辉..几种农业废弃物堆肥过程中理化性状的变化研究[J].山东农业大学学报（自然科学版）,2017,48(5):716-721,6.基金项目
"十二五"国家科技支撑计划课题:低成本村镇基础设施与环境建设技术研究与示范(2014BAL04B05) （2014BAL04B05）
