摘要
水培条件下研究了不同形态氮素对植物铁素营养的影响,以及铁对植物氮素代谢的影响。不同形态氮素显著影响植物的铁素营养,营养液中适当的NO_3^-/NH_4^+值有利于植物的生长发育,可显著改善植物的铁素营养状况,同时,铁也显著影响植物氮素代谢,缺铁会造成植物体内硝酸还原酶活性降低,NO_3^-累积增加。
The effect of different N fertilizer forms on plant iron nutrition and the role of iron in plant N metabolism were studied under nutrient condition. It was found that suitable NO_3^-/NH_4^+ ratio in nutrient solution can significantly promote plant growth and improve plant iron utilization efficiency. Iron also influence plant N metabolism. In case of iron deficiency, nitrate reductase activity decreased, resulting in NO_3^- accumulation and lowering of crop yield and quality.
出处
《上海农业学报》
CSCD
1993年第1期44-48,共5页
Acta Agriculturae Shanghai
基金
国家自然科学基金
关键词
绿叶蔬菜
氮
铁
营养
Plant iron nutrition
N fertilizer forms
Foliage vegetable
Nitrate reductase
