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首页> 外文期刊>日本土壤肥料学雑誌 >Nitrogen absorption and distribution of muskmelons (Cucumis melo L.) at different growth stages using hydroponics.
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Nitrogen absorption and distribution of muskmelons (Cucumis melo L.) at different growth stages using hydroponics.

机译：使用水培法在不同生长阶段对甜瓜（Cucumis melo L.）的氮吸收和分布。

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摘要

The dynamics of nitrogen in hydroponically grown muskmelons was examined in detail from the stage of vegetative growth to harvest. At harvest, 70% of the plant nitrogen was absorbed after pollination and 76% of it was distributed to the fruit. It was suggested that a substantial amount of the nitrogen absorbed via the roots before and just after pollination was directly distributed to the infant fruit and that, after pollination, the fruit development and maturation were caused by the redistribution of the nitrogen from other organs. In order to clarify this point, the nitrogen dynamics in plants were examined from the viewpoint of the source-sink relationship. In summary, fruit always functions as a large 'sink,' and nearly 50% of the fruit nitrogen at harvest is derived from the redistribution of nitrogen from other organs, mainly from the leaves. The leaves were classified into three groups in terms of their function, either as a source organ or a sink organ. They function as a large 'source'of nitrogen after pollination.
机译：从营养生长到收获的各个阶段，详细研究了水培甜瓜中氮的动态。收获时，授粉后吸收了70％的植物氮，其中76％分配给了果实。有人认为，授粉前后，通过根部吸收的大量氮直接分配给婴儿果实，而授粉后，果实的发育和成熟是由其他器官中氮的重新分布引起的。为了阐明这一点，从源-库关系的角度检查了植物中的氮动力学。总而言之，果实始终是一个巨大的“汇”，收获时将近50％的果实氮来自其他器官（主要是叶子）中氮的重新分配。根据其功能，将叶子分为源器官或下沉器官三类。它们在授粉后作为氮的重要“来源”。

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