For most soybean growers it is preferable to have rows wide enough to permit mechanical cultivation . 对于大多数大豆栽培者来说,最好有足以允许机械耕种的行距。
This usually means a wider spacing than would be used in an ordinary commercial nursery for the same species . 这通常意味着要比正常生产性苗圃的同样树种采用较大的株行距。
In seed orchards, this is accomplished through the establishment of dilution zones, control of the positioning of orchard clones, plant espacement, etc . 这就是在种子园设立稀释带,控制园内无性系的位置和株行距离。
Double spacing is required between two paragraphs 段与段之间通常采用双行距。