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作 者 ：杨青琴1;薛进军1;王秀茹1;赵志军1;台社珍1;张福锁2;李绍华2

期 刊 ：植物营养与肥料学报 2001年 7卷 4期 页码：435-440

关键词：铁肥；根系输液；果树；机理；

Keywords:iron fertilizer, root insertied, fruit tree, mechanism,

摘 要 ：邻二氮杂啡铁示踪结果表明 ,铁肥根系输液处理时铁以二价态由根被动吸收 ,并运输到根、茎、和叶的主脉内。运输部位都是靠近形成层的木质部 ,运输速度每小时可达数十厘米。室内营养液培养的八棱海棠苗用⁵⁹Fe示踪结果表明 ,断根中分配的⁵⁹Fe为 18.1% ,叶中分配的⁵⁹Fe占 70 .9% ;断 1、2、3条根的植株⁵⁹Fe在叶中的分配比例分别为 57.9%、63.6 %、68.0 %。

Abstract:The trace of red O-phenanthroline Fe indicates: Fe²⁺ was absorbed by roots and transported to stem, main vein of leaves when iron fertilizer was root inserted.Fe²⁺ transports along xylem near cambium. The speed of transportation reached dozens of centimeters per hour. The trace of ⁵⁹Fe with Malus micromalus cultured in nutrient solution under the controlled conditions indicate: distribution of ⁵⁹Fe in cutting roots and leaves were 18.1% and 70 9%, respectively. The trace of ⁵⁹Fe with Malus micromalus indicate: the ratios of iron distributed in leaves by cutting one, two, three roots were 57.9%, 63.6 %and 68.0%, respectively.

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