茉莉花产量与磷营养关系研究

Study on the Relationship Between Yield and Phosphorus Nutrition of Jasmine

[目的]研究茉莉花产量与土壤磷含量、植物磷含量的关系,为提高茉莉花产量提供磷营养管理科学依据。[方法]通过调查、采样、测试和统计分析,对横州茉莉花产量与磷营养关系进行系统研究。[结果]土壤全磷含量0.062~0.149 g/kg和有效磷含量4.8~90.0 mg/kg为高产地块2个必要不充分条件。土壤全磷含量与土壤全氮含量、土壤全钾含量、土壤速效磷含量、土壤速效钾含量以及有效态的铁、锰、铜、锌、硼、钼含量呈正相关,原因是土壤全磷含量高的土壤,土壤有机质含量也高,此种情况下各种养分含量也高。土壤有效磷含量与枝、叶磷含量呈显著和极显著正相关,说明土壤有效磷含量越高,枝、叶磷含量越高,有利于开花;土壤有效磷含量与茉莉花4个器官中的诸多养分含量均呈显著或极显著的正相关,说明土壤有效磷高时促进其他营养元素的吸收。[结论]高产地块土壤全磷含量和有效磷含量范围分别为0.062~0.149 g/kg和4.8~90.0 mg/kg;土壤有效磷是茉莉花关键的肥力指标之一。

[Objective]The aim was to study the relationship between jasmine yield and soil phosphorus content,plant phosphorus content,and provide scientific basis for phosphorus nutrition management to improve jasmine yield.[Method]Through investigation,sampling,testing and statistical analysis,the relationship between phosphorus nutrition and Jasmine yield in Hengzhou was systematically studied.[Result]Soil total phosphorus content of 0.062-0.149 g/kg and available phosphorus content of 4.8-90.0 mg/kg were necessary and insufficient conditions for high-yield plots.Soil total phosphorus content was positively correlated with soil total nitrogen content,soil total potassium content,soil available phosphorus content,soil available potassium content and available iron,manganese,copper,zinc,boron and molybdenum content.The reason is that the soil with high soil total phosphorus content also has high soil organic matter content.In this case,the content of various nutrients is also high.There was a significant and extremely significant positive correlation between soil available phosphorus content and branch and leaf phosphorus content,indicating that the higher the soil available phosphorus content,the higher the branch and leaf phosphorus content,which was conducive to flowering.The content of soil available phosphorus was significantly or extremely significantly positively correlated with the content of many nutrients in the four organs of jasmine,indicating that high soil available phosphorus promoted the absorption of other nutrients.[Conclusion]The range of soil total phosphorus content and available phosphorus content were 0.062-0.149 g/kg and 4.8-90.0 mg/kg,respectively.Soil available phosphorus is one of the key fertility indexes of jasmine.