有效微量元素缺乏导致食葵叶片枯褐原因初步分析

对微量元素缺乏导致食葵叶片失绿、褐化、干枯进行了初步试验分析研究。结果表明,在发生枯褐的食葵叶片中硼、铁、锰、镁等微量元素的含量比正常绿叶还高,但其中真正有效的微量元素并不足,因作物根层土壤pH值高,虽然食葵体内铁等微量元素的总含量并不低,但可参与正常生理活动的缺乏,造成食葵体内叶绿素正常生理代谢活动受阻,因而叶片失绿发黄、枯褐。

Primary Analysis on the Cause of Leaf of Confectionery Sunflower turning Brown and Withered

In this paper,the cause of leaf of confectionery sunflower turning brown and withered was analyzed.The amount of the micro-elements—B,Fe,Mn,Mg was higher in the brown and withered leaves than that in the normal green leaves.But the efective amount of the micro-elements was not enough due to the high soil pH.So the normal physiological activity in the leaves was influenced and turned brown and withered.