关键词: 二甲四氯, 二甲四氯, 草坪杂草, 除草效果

Abstract: There are diverse grade overcompensation responses on float-seeding of flue-cured tobacco. Compensation responses on clipping intensity of float-seeding were studied by cutting management and field experiment. Experimental results indicated tobacco seedlings became more vigorous while leaves exceeding 5cm were cut by 1/3, showing more obvious overcompensation responses, and these seedlings grew quickly after transplanted, there quality and production value were increased. Tobacco seedlings’ growth was restrained while clipping intensity was increased. Plants without clipped trended to early flowering obviously.