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目 录 前言 .....................................................................................................................................2 http://www.paper51.com 正文 ...................................................................................................................................2 copyright paper51.com
1 土壤中有机质的存在形态及变化................................................................................2 内容来自论文无忧网 www.paper51.com 1.1土壤有机质组成............................................................................................................2 http://www.paper51.com 1.2土壤有机质组成............................................................................................................2 paper51.com 1.3土壤有机质的分解和转化............................................................................................3 http://www.paper51.com 1.4影响土壤有机质分解和转化的因素............................................................................6 paper51.com 2土壤中有机质的作用........................................................................................................7 copyright paper51.com 2.1有机质是植物养分的主要来源....................................................................................7 copyright paper51.com 2.2有机质可促进作物的生长发育....................................................................................8 paper51.com 2.3有机质可促进土壤微生物的活动................................................................................8 http://www.paper51.com
2.4有机质可改良土壤结构................................................................................................8 http://www.paper51.com 2.5有机质可提高土壤温度................................................................................................8 copyright paper51.com 2.6有机质可提高土壤的保水保肥能力............................................................................8 内容来自论文无忧网 www.paper51.com
2.7有机质提高土壤中某些元素的有效养分....................................................................8 paper51.com 2.8有机质对农药等有机污染物有固定作用，可减少环境污染....................................8 paper51.com 2.9有机质可吸收二氧化碳，保持全球碳的平衡............................................................9 http://www.paper51.com
3有机质的管理及施用对策................................................................................................9 内容来自www.paper51.com 3.1如何管理好土壤中的有机质........................................................................................9 http://www.paper51.com 3.2有机质肥料的施用对策...............................................................................................10 paper51.com 3.3施用有机质肥料，生产绿色植物产品，为社会提供更多的健康保障...................10 http://www.paper51.com 结语......................................................................................................................................11 paper51.com 致谢......................................................................................................................................11 内容来自www.paper51.com 参考文献 ............................................................................................................................12 http://www.paper51.com 英文对照..............................................................................................................................12 copyright paper51.com |