【摘要】 20 0 1～ 2 0 0 2年在河南农业大学科技园区温室内 ,进行了钾肥水平对烤烟漂浮育苗烟苗生长发育的影响试验。结果表明 ,钾水平不同 ,对烟苗生长发育的影响亦不同。其中 ,以K2 O5 0～ 1 0 0mg/L处理对烟苗的生长发育最为有利 ,能明显改善烟苗的植物学性状 ,增加叶绿素含量 ,提高根系活力和NR酶活性 ,增加叶片中矿质营养元素含量。更多还原

【Abstract】 The greenhouse test with different potassium levels in Henan Agricultural University during 2001-2002.Showed different potassium levels had different influence on growth and development of flue-cured tobacco seedlings in the floating system,among which, 50～100 mg/L K 2O could make a better growth of tobacco seedlings and increase the chrolophyll content,NR activity and mineral elements of tobacco seedlings leaves and root vitality.更多还原