论文部分内容阅读
本研究探讨了兰竹荔枝叶片常量元素含量与土壤有效养分含量、pH值的年周期变化。统计分析表明:叶片各元素含量的年周期变化具有特定模式,且一致呈季节性显著差异;年周期变化中的叶片含氮、钾量,大年低于小年;土壤有效养分含量的季节性变化不及叶片元素含量的变化显著,且其变化规律不甚明显;全年水解氮及速效磷、钾值,绝大多数存在显著的季节性差异,而交换性钙,镁及pH值,大多未呈显著差异;兰什荔枝叶片元素与土壤有效养分含量间的年周期变化相关性较差,但试验结果提示,有必要注意个别月份的两者相关性。
In this study, we discussed the leaf-constant content of Litchi chinense L. and the annual change of soil available nutrient content and pH value. The statistical analysis shows that the annual variation of the leaf element content has a specific pattern and is consistent with a seasonal significant difference; leaf nitrogen and potassium content in the annual cycle changes are lower than the young year; the seasonal distribution of available soil nutrient content The change of leaf element content was not as obvious as that of leaf element, and its variation pattern was not obvious. There were significant seasonal differences in the content of hydrolyzed nitrogen, available phosphorus and potassium in the whole year, while exchangeable calcium, magnesium and pH were mostly not There was a significant difference between them. The correlation between leaf elements of Lysychia chinensis and annual soil nutrient content was poor, but the test results suggested that it is necessary to pay attention to the correlation between the two individual months.