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
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