top/root ratio

Japanese: top/root ratio(英語表記)toprootratio
top/root ratio

…Abbreviation for top/root ratio, which is the ratio of the weight of the aboveground part of a crop to the weight of the underground part. There are various types of crops, some of which use the aboveground part and some of which use the underground part. In order to achieve good production, it is directly necessary to increase the ratio of these two parts that are used, but at the same time, it is important to maintain an appropriate balance between the growth of both parts. …

*Some of the terminology that mentions "top/root ratio" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…top/root ratioの略で,作物の地上部重量と地下部重量との比率。作物には地上部を利用するものや地下部を利用するものなどさまざまなものがあり,優れた生産をあげるためには,直接的にはこれらの利用部位の比率を高めることが必要であるが,同時に両者の生長のバランスを適正に保つことが重要である。…

※「top/root ratio」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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