With one to four leaves arranged in a rosette, from a distance, the plant looks a bit like a hardy piece of kale.
一个莲座叶丛生长着一到四片叶子，从远处看，这种植物有点像一片耐寒的甘蓝。
The results showed that tobacco brown spots were significantly reduced by picking the bottom 1~3 leaves of tobacco plant in rosette stage.
结果表明，在现蕾期摘除底脚叶1～3片，对防治烟草赤星病有明显效果。
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