园地主要经济作物氮磷钾与pH相关性研究

Study on the Correlation between Nitrogen,Phosphorus,Potassium and pH in Five Crop Garden Economic Crops

为了解古田县果园作物土壤氮、磷、钾养分状况,探讨了果园土壤氮、磷、钾含量与土壤pH值之间的关系。结果表明,古田县园地土壤pH的平均值为5.07,处于酸性水平;全氮的含量均值为1.20g/kg,总体处于中等水平;供试园地土壤碱解氮均值为143.4mg/kg,处于中等水平;供试土壤有效磷均值为29.90mg/kg,处于丰富水平;速效钾含量均值为59.2mg/kg,处于严重缺乏水平。土壤中的氮、磷、钾养分状况与土壤中的pH值呈显著或极显著正相关。因此,改良土壤酸度是供试果园土壤改善氮、磷、钾养分供应的主要措施。

To understand the nutrient status of soil nitrogen,phosphorus and potassium in orchard crops in Gutian County,the relationship between soil N,P,K and soil pH in orchard was discussed.The results showed that the average soil pH value in Gutian County was 5.07,which was at an acidic level;the average total nitrogen content was 1.20g/kg,which was generally at a medium level;the average soil alkaline hydrolysis nitrogen of the test garden was 143.4mg/kg,which was at a medium level.The level of available phosphorus in the test soil is 29.90mg/kg,which is at a rich level;the average available potassium content is 59.2mg/kg,in a serious lack of level.The nitrogen,phosphorus and potassium nutrients in the soil were significantly or extremely significantly positively correlated with the soil pH.Therefore,improving soil acidity is the main measure to improve soil nutrient supply of nitrogen,phosphorus,and potassium in orchards.