菇渣覆盖对改良土壤的作用
时间:2019-10-21 19:22 来源:毕业论文 作者:毕业论文 点击:次
| 摘要：菇渣是栽培各种食用菌后剩下的并且经过微生物分解的有机固体废弃物，随意丢弃，不但造成病菌积聚、栽培环境劣变，还使得食用菌生产出现连作障碍，而且经日晒雨淋，对水体生态环境产生严重的污染。本课题主要通过研究菇渣覆盖物对土壤理化性的影响和改良土壤作用，分析菇渣作为覆盖物的主要生态功效，为菇渣资源的再利用与有机物覆盖提供相应的理论依据与技术支持。实验对菇渣覆盖物下的pH值，EC值，水解N含量，速效P、K及全N、P、K含量，有机质含量等理化指标进行了在0-10cm和10-20cm土壤下连续四年的数据测量并进行了系统对比分析，结果表明：菇渣作为土壤覆盖物可以有效提高土壤的pH值，EC值，水解氮含量，有机质含量及速效P、K及全N、P、K含量。土壤的pH值，EC值，水解氮含量，有机质含量及速效P、K及全N、P、K含量大体随菇渣覆盖厚度的增加而增加。比较同一处理下四年间的数据可知，菇渣覆盖在土壤的时间越长，土壤的pH值越高、有机质含量全氮含量及全钾含量越高，电导率值、水解氮含量、速效钾含量、速效磷及全磷含量越低。41175 毕业论文关键词：菇渣；覆盖物；土壤；理化性质；改良 Effects of Mushroom residue cover on soil Absract:Mushroom residue is a kind of organic solid waste which is left after cultivating all kinds of edible fungus and is decomposed by microorganism.Discarded, not only causing bacteria accumulation and cultivation environment deterioration,but also making the appearance of continuous cropping obstacle of edible fungus production, and by the sun and rain,the water ecological environment produced serious pollution.Through studying the influence of mushroom residue mulch on soil pHysical-chemical property and soil improvement.This topic analyses the main ecological effect when mushroom residue is as a mulch.By the analyses provide theoretical basis and technical support for reusing of mushroom residue and organic mulching.The experiment measured the pH,EC,Oganic Matter,Hydrodyable N,Available P,Available K,Total N,Total P and Total K for the 10 cm and 20 cm soil in four consecutive years under the mushroom residue cover,in addition,comparison and system analysis the data.The results show that mushroom residue as soil mulch can effectively improve the pH,EC,Oganic Matter,Hydrodyable N,Available P,Available K,Total N,Total P and Total K content of the soil.And the pH,EC,Oganic Matter ,Hydrodyable N,Available P,Available K,Total N,Total P and Total K content of the soil generally increase with the increase of mushroom residue cover thickness.Comparison of the four years under the same processing data,the longer mushroom residue cover in the soil,the higher of pH,Ognic Matter content and Total N content,the lower of EC,Hydrodyable N,Available P,Available K,Total P and Total K content. Keywords:Mushroom residue;Cover;Soil;pHysical-chemical Properties;Improvement 目录 摘要 i Absract i 目录 iii 1 绪论 1 1.1 研究背景 1 1.2 国内外研究现状 2 1.3 研究目的和意义 3 2 实验材料与方法 3 2.1 覆盖材料 3 2.2 实验主要仪器与试剂 3 2.2.1 主要仪器 3 2.2.2试剂 3 2.3 实验总体方法设计 4 2.3.1 试验地处理 4 2.3.2 土壤样品处理 4 2.4 土壤理化性质指标具体测量方法 4 2.4.1 土壤pH、EC值的测量 4 2.4.2 土壤有机质含量的测定 4 (责任编辑：qin) |