草屑腐解物理化性质调节+文献综述
时间:2018-06-14 11:50 来源:毕业论文 作者:毕业论文 点击:次
| 摘要：对学校修剪草坪所产生的草屑进行高温好氧堆肥，测量草屑腐解物化性质。绘制腐解温度变化曲线并探讨追腐后化学性质PH、EC、CEC和物理性质容重、持水能力、总孔隙度、持水孔隙、通气孔隙和气水比变化，探讨理化性质调节的方法和操作可行性。在改良过的基质种植上种植灯芯草（juncus effusus L），观察长势并测定种植后各个理化指标。根据试验测定数据的比较与分析，评价草屑堆肥基质用于生产的优势和劣势。结果表明：草屑追腐温度先急剧上升后缓慢下降，最后文持在一定温度，既说明堆肥完全；追腐后草屑PH由偏酸上升至中性，适宜种植多数植物，无需改良可直接种植；追腐后草屑 EC偏低，后通过自来水灌溉使EC恢复到正常数值，无需进行性质改良；追腐后草屑CEC数值很高，说明草屑追腐后具有很强的保肥性，这是应用草屑生产的一大优势所在；草屑追腐后物理性质优良，具有低容重，孔隙度大，透气性好和较强的持水能力，无需进行性质改良。种植的灯芯草长势良好，种植后基质理化性部分发生变化，这将为改良草屑基质并实现循环利用提供良好的研究方法，达到可持续发展的人文要求。24364 毕业论文关键词： 草屑腐解物；理化性质；栽培基质； Physical and chemical properties of decomposing grass clippings and regulation Abstract: The clippings generated from mowing the lawn will be composted in high temperature and with the aerobic condition in School, measure the chemical and physical properties of the grass clippings . Draw chase rot temperature curve and explore chemistry PH, EC, CEC and physical properties of bulk density , water holding capacity , total porosity, pore water retention , aeration porosity and gas -water ratio , and explore ways to adjust the physicochemical properties and operations feasibility . Planting rushes (juncus effusus L) on improved matrix, observe and measure various physical and chemical indicators after planting . Evaluate the ion matrix and the grass clippings strengths and weaknesses based on a comparison and analysis of experimental data used in the production. The results showed that: the temperature with a sharp rise at first declines slowly, and finally maintained at a certain temperature which means a compost completely ； PH increased from acidic to neutral .It is suitable for most plants .It did not need improvement and can be planted directly ； the EC is low at first, then returned to normal by water irrigation EC, without the need for improvement ； The high CEC values indicate a strong fertilizer , which is the major advantage ； With an excellent physical properties of low bulk density, porosity , permeability, good water holding capacity .It did not need for adjustment. Planting rushes grow well, physicochemical of matrix partial change after planting , which will provide a good research methods to improve the matrix and recycle of grass clippings, as for it can get the way to the humanities requirements of sustainable development. Keywords:grass clippings decomposing; the chemical and physical properties;growing media 目 录 1绪论 1 1.1国内外草屑研究状况 1 1.2研究目的及意义 2 2材料与方法 3 2.1 试验设计及供试材料 3 2.2 试验仪器及器具 3 2.3 实验试剂 3 2.4 测定项目及方法 3 2.4.1 草屑腐解温度的测定 4 2.4.2 草屑化学性质的测定 4 2.5统计分析 6 3 结果与分析 7 3.1 草屑腐解温度曲线 7 3.2溶液酸碱度PH的调节 9 (责任编辑：qin) |