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武鸣县一菠萝园菠萝植株全部失绿黄化,经诊断为锰过量导致生理性缺铁。经施铁肥后,取得显著治疗效果。叶片分析和土壤分析进一步证明,过量锰导致菠萝植株体内Mn/Fe比高达7.8,为正常植株的3倍以上。锰的绝对含量为正常植株的4倍以上。锰铁平衡的严重失调,引起生理性缺铁,因而出现失绿黄化症。对于菠萝来说,当Mn/Fe比在5以上,便可能诱发缺铁失绿。
Pineapple pineapple plant in Wuming County, a total loss of green and yellow, the diagnosis of excessive manganese lead to physiological iron deficiency. After the iron fertilizer, achieved significant therapeutic effect. Leaf analysis and soil analysis further proved that excessive Mn resulted in Mn / Fe ratio of up to 7.8 in pineapple plants and more than 3 times of normal plants. The absolute content of manganese four times more than normal plants. A serious imbalance of ferromanganese, causing physiological iron deficiency, resulting in chlorosis yellow syndrome. For pineapple, when the Mn / Fe ratio is above 5, it may induce iron deficiency chlorosis.