肥料增效剂对大蒜、油菜生长和土壤肥力的影响

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1、HUAZHONGAGRICULTURALUNIVERSITY硕士学位论文MASTER’SDEGREEDISSERTATION肥料增效剂对大蒜、油菜生长和土壤肥力的影响EFFECTSOFFERTILIZERSYNERGISTSONGARLICANDOILRAPEGROWTHANDSOILFERTILITY研究生:战帅CANDIDATE：ZHANSHUAI学号:2016303120048STUDENTNO.：专业:农业资源利用MAJOR：UTILIZATIONOFAGRICULTURALRESOURCES导师:赵竹

2、青教授SUPERVISOR：PROFESSORZHAOZHUQING中国武汉WUHAN，CHINA二○一八年六月JUNE，2018分类号：密级：华中农业大学硕士学位论文肥料增效剂对大蒜、油菜生长和土壤肥力的影响EFFECTSOFFERTILIZERSYNERGISTSONGARLICANDOILRAPEGROWTHANDSOILFERTILITY研究生:战帅:学号:2016303120048：指导教师:赵竹青:教授学位类型:农业：硕士领域:农业推广：华中农业大学资源与环境学院中国·武汉CollegeofReso

3、urcesandEnvironmentofHuazhongAgriculturalUniversityWuhan，China肥料增效剂对大蒜、油菜生长和土壤肥力的影响目录摘要...................................................................................................................................ⅰAbstract...............................

4、...............................................................................................ⅲ1研究综述..........................................................................................................................11.1化学肥料发展与施用现状....................

5、...................................................................11.1.1施肥过量，肥料利用率低................................................................................31.1.2养分淋失，污染环境...............................................................................

6、.........31.1.3不合理施肥，土壤肥力下降............................................................................31.1.4微量肥施用不足，土壤养分失衡....................................................................41.2新型肥料的概念与发展.....................................................

7、......................................41.3钼肥对植物的作用与施用.......................................................................................61.4腐植酸对作物及土壤微生物的影响.......................................................................71.5微生物多样性对土壤肥力的意义..........

8、.................................................................92研究背景、目标和内容................................................................................................122.1研究背景............