... A disk harrow is a set of 6 to 10 disk blades (called a gang) attached at regular intervals to a shaft, and is usually pulled in two or more sets. The rotating disks cut up the soil mass, working deeply and also having a great leveling effect. A harrow with many star-shaped blades instead of disks is called an alfalfa harrow, and it pierces and cuts the soil mass to break it down. Some modern harrows can be driven in addition to being pulled, which increases the soil breaking effect. ... *Some of the terminology that mentions "alfalfa harrow" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… ディスクハローは凹円板の周りに刃をつけたディスク刃6~10枚を1本の軸に一定間隔にとりつけたもの(これをギャングという)を通常2組以上セットにして牽引し,回転するディスクによって土塊を切り砕くもので,深く作用するとともに均平作用も大きい。ディスクの代りに,星形のような刃を多数つけたものはアルファルファハローと呼ばれ,土塊を刺し削って砕土する。最近のハローには牽引するだけでなく,駆動して,砕土の働きを大きくしたものもある。… ※「アルファルファハロー」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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