七叶一枝花不同生长期养分含量及干物质积累特性分析

Characteristics of the Nutrient Content and Dry Matter Accumulation of Paris Polyphylla at Different Growth Stages

为了探索七叶一枝花植株营养元素吸收特性。对七叶一枝花地上部和地下部在果实形成期、膨大期和收获期的氮、磷、钾、钙、镁、硫、铁、铜、锌、锰、硼含量进行测定与分析。结果表明:七叶一枝花不同部位中叶片的氮含量最高,为3.440%;果实的磷含量最高,为0.450%;茎的钙含量最高,为6.480%。七叶一枝花果实成熟期的干物质主要积累于根茎中,果实其次,叶片最低。大量元素和中量元素主要累积在七叶一枝花根茎和果中,微量元素主要积累在根系和根茎中,铁和铜在七叶一枝花根系的相对含量较高。七叶一枝花各部位对钾、氮元素需求较大,随着生长周期的推移,微量元素的积累量不断增大。

In order to explore the absorption characteristics of nutrient elements in Paris polyphylla,the contents of nitrogen,phosphorus,potassium,calcium,magnesium,sulfur,iron,copper,zinc,manganese and boron in the aboveground part and underground part of Paris polyphylla during the fruit formation period,expansion period and harvest stage were measured and analyzed.The results showed that in different parts of Paris polyphylla,the nitrogen content in the leaves was the highest,which was 3.440%;the phosphorus content in the fruit was the highest,which was 0.450%;and the calcium content in the stems was the highest,which was 6.480%.The dry matter of Paris polyphylla at the fruit maturation stage was mainly accumulated in the rhizomes,followed by the fruit and the leaves.Large elements and medium elements were mainly accumulated in the rhizomes and fruits of Paris polyphylla,while the trace elements were mainly accumulated in the root systems and rhizomes.The relative contents of iron and copper were relatively high in the root systems of Paris polyphylla.The demand for potassium and nitrogen elements in each part of Paris polyphylla was large,and the accumulation of trace elements increased with the passage of the growth cycle.