钾营养对稻体内铁含量和生理效应的影响

本文通过田间对比和水培模拟不同亚铁浓度里加钾素肥的试验,结果表明:在还原条件下增施钾肥后,能明显地降低水稻体内亚铁和活性铁的含量,白根数目增多、根系氧化力提高、叶片光合强度增强、稻体内蛋白氮增加,非蛋白氮减少,促进了稻体内代谢的平衡,有效地防了亚铁的中毒。

THE INFLUENCE OF POTASSIUM(K) NUTRITION ON THE IRON CONTENT IN RICE STEM AND ITS PHYSIOLOGICAL REACTION

In this paper the authore report that after spreading the potassium nutrition into the rice fields, the brown spot from growing was effectively stopped, the photosynthesis in the leaf was increased and the rice growth was promoted. The contrast of the pot growth and the field growth showed that the oxidation o f roots was raised, the white roots were decreased, the ferrous in the surroundings oxidized into high iron depositing far away from the roots and the ferrous, the active iron, into the rice stem were greatly decreased, which promoted the metabolic equilibrium of the rice and prevented the rice leaves from ferrous poisoing.