不同氮、磷、钾水平及配比对密花石斛幼苗生长的影响

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1、HUAZHONGAGRICULTURALUNIVERSITY硕士学位论文MASTER’SDEGREEDISSERTATION不同氮、磷、钾水平及配比对密花石斛幼苗生长的影响EFFECTOFDIFFERENTLEVELSANDCOMBINATIONSOFNITROGEN,PHOSPHOROUSANDPOTASSIUMONTHEGROWTHOFTHESEEDLINGSOFDENDROBIUMDENSIFLORUMWALLICH研究生:孔令猛CANDIDATE：KONGLINGMENG导师:尹俊梅研究员SUPERVISOR

2、：PROFESSORYINJUNMEI刘国锋教授PROFESSORLIUGUOFENG学位类型:农业推广硕士DEGREEMASTERDEGREEINTYPE：AGRICULTURALEXTENSION领域:园艺FIELD：HORTICULTURE中国武汉WUHAN，CHINA二○一四年六月JUNE，2014万方数据学校名称：华中农业大学单位代码：10504分类号：S6密级：华中农业大学硕士学位论文不同氮、磷、钾水平及配比对密花石斛幼苗生长的影响EffectofDifferentLevelsandCombination

3、sofNitrogen,PhosphorousandPotassiumontheGrowthoftheSeedlingsofDendrobiumdensiflorumWallich研究生:孔令猛学号:2012305120020指导教师:尹俊梅研究员刘国锋教授学位类型:农业推广硕士领域:园艺华中农业大学园艺林学学院中国.武汉CollegeofHorticulture&ForestrySciencesHuaZhongAgricultureUniversityWuhan,China万方数据万方数据不同氮、磷、钾水平及配比对

4、密花石斛幼苗生长的影响目录摘要·········································································································································I关键词·········································································································

5、····························IAbstract··································································································································IIKeywords····················································································

6、········································III1.引言····························································································································11.1.密花石斛研究现状·············································································

7、······················11.2.植物矿质元素氮磷钾的研究进展···········································································11.2.1.植物矿质元素氮的研究进展·······································································11.2.2.植物矿质元素磷的研究进展····································

8、···································31.2.3.植物矿质元素钾的研究进展·······································································61.2.4.兰科植物氮磷钾配比施肥研究进展··························