板栗结果母枝中氮磷钾含量与产量之间关系的研究

对板栗结果母枝中 N、P、K三种主要营养元素动态变化规律及与产量间的关系进行了研究。结果表明 :N、P、K三种主要元素在板栗结果母枝中的动态变化与其自身的生长规律相吻合 ,在生长和开花高峰期 ,母枝中 N、P、K的含量最低。 N、P、K三种主要元素含量变化之间存在一定的相关性 ,N和 P含量之间的相关性达到了极显著水平。 P在板栗雌花分化过程中发挥较大的作用且对产量形成有较大影响。生产中对氮、磷、钾的补充应在生长消耗高峰出现之前进行。

The Content of Nitrogen, Phosphorus and Potassium in the fruit-bearing Shoot of Chinese Chestnut as Correlated with the Nut Yield

The pattern of change in the content of nitrogen (N), phosphorus (P), and potassium (K) in the fruit bearing shoot indicates that the change was dynamically corresponded with the annual growth and development cycle of the tree proper. In the full growth and blooming phase, those three elements present in the fruit shoot were very low in content, and among the N, P, K elements themselves, N and P were extremely remarkably correlated with each other. P was the nutrient element that played the most important role in the process of differentiation of the female flower, thus imposing a great impact on the nut yield. Therefore, it is recommended that the supplementary NPK fertilizers should be applied prior to the consumptive peak period resulting from tree growth and development.