槟榔土壤养分与叶片营养含量变化调查及相关分析研究

Changes of Nutrient Content in Leaf and Soil of Areca catechu Orchard and Their Relationships

为探讨槟榔叶片营养与土壤养分间关系,在海南槟榔种植园采集槟榔与相应土壤样品,包括槟榔不同生产管理水平、正常结果和黄化槟榔区,分析不同生产管理水平和正常结果与黄化槟榔叶片氮、磷、钾和土壤养分含量,以及槟榔营养含量与土壤养分含量相关系数。结果表明:土壤有机质与土壤碱解氮、全磷、速效磷和速效钾均呈极显著正相关关系,全磷与速效磷、全钾与速效钾含量间呈极显著正相关关系,碱解氮、全磷、速效磷和速效钾之间呈极显著正相关关系,全钾与全磷呈显著正相关关系。有机质、碱解氮、全磷、速效磷、全钾、速效钾与叶片全N、P、K都呈极显著正相关关系。因此,槟榔土壤碱解氮、全磷、速效磷和速效钾间存在彼此互相促进的关系;槟榔土壤有机质、碱解氮、全磷、速效磷、全钾和速效钾含量变化对槟榔叶片N、P、N含量会产生正向影响。

To study the relationships between soil nutrition and leaf nutrition of Areca catechu,the leaf samples of Areca catechu and corresponding soil samples were collected from various Areca catechu orchards with different production and management levels in Hainan province,and their N,P and K content were analyzed.The results indicated that organic matter content in the soil was significantly positively correlated with the content of alkali-hydrolyzable nitrogen,total phosphorus,available phosphorus and available potassium in the soil(P<0.01);total phosphorus in the soil was significantly positively correlated with the content of available phosphorus,total potassium and available potassium in the soil(P<0.01);there were significantly positive correlations among alkali-hydrolyzable nitrogen,total phosphorus,available phosphorus and available potassium content in the soil(P<0.01);there was significantly positive correlation between total potassium and total phosphorus content in the soil(P<0.05).The content of organic matter,alkali-hydrolyzable nitrogen,total phosphorus,available phosphorus,total potassium and available potassium in the soil was significantly positively correlated with the content of total N,total P and total K in the leaf(P<0.01).Thus there were promotive interrelationships among the content of alkali-hydrolyzable nitrogen,total phosphorus,available phosphorus and available potassium in the soil of Areca catechu orchard;and the changes in the content of organic matter,alkali-hydrolyzable nitrogen,total phosphorus,available phosphorus,total potassium and available potassium in the soil of Areca catechu orchard had positive influences on the content of N,P and K in the leaf of Areca catechu.